Civil War Defenses of Washington

100 Pounder Parrott Carriage on Wooden Platform.jpg 100 Pounder Parrott on Iron Carriage_100.jpg 100 Pounder Parrott on Iron Carriage_69.jpg 15 inch Barbette carriage Centre Pintle Model 1862, 1862_8.jpg 15 inch Barbette Carriage, Front Pintle, As Designed by Capt. J. J. Rodman., 1863_164.jpg 200 pounder gun, Battery Rogers_1.jpg 200 pounder gun, Battery Rogers_2.jpg 200 pounder parrott in iron clad embrasure from sketch of General Barnard.jpg Arrangement for 15 inch Breech Loading Gun_172.jpg Arrangement for Centre Pintle, 15 inch Guns_40.jpg Arrangement for loading 15 inch guns under cover of parapet_107.jpg Battery on Spur to Right of Bunker Hill, 1863.jpg Battery to the right of Fort Slocum_3.jpg Bed for transporting 15 inch guns._106.jpg Bed for transporting 15 inch guns._170.jpg Block House - Two Stories.jpg Block House Plan and Section_186.jpg Bomb-Proof Guard-House for Fort Reno_4.jpg Bombproof Block house - Fort Tillinghast_5.jpg Bombproof blockhouse on line of stoccade [stockade]_118.jpg Casemate Embrasures and Platforms for Siege or Field Howitzers; and Barbette Embrasures (with log, or gabion revetment for siege, or Field guns)._110.jpg Casemate Embrasures and Platforms for Siege or Field Howitzers; and Barbette Embrasures (with log, or gabion revetment for siege, or Field guns)._173.jpg Casemate Embrasures and Platforms for Siege or Field Howitzers; and Barbette Embrasures (with log, or gabion revetment for siege, or Field guns)._174.jpg Casemate Embrasures and Platforms for Siege or Field Howitzers; and Barbette Embrasures._76.jpg Casemate Embrasures and Platforms for Siege or Field Howitzers; and Barbette Embrasures._77.jpg Casemate Embrasures and Platforms for Siege or Field Howitzers; and Barbette Embrasures._78.jpg Casemate Embrasures and Platforms for Siege or Field Howitzers; and Barbette Embrasures.jpg Circular brick cistern with filter and pump_51.jpg Contour Map of Fort Ward, showing positions of Forts, Jackson, Runyon, Albany, Craig, Richardson, Scott, Barnard, Blenker, and Ward_156.jpg Contour map of the site and vicinity of Fort Sumner_93.jpg Contour map of the sites and vicinity of Battery Alexander, Forts Sumner, Mansfield,Simmons and batteries Bailey and Benson._94.jpg Contour map of the sites and vicinity of Fort Ethan Allen, Fort Marcy and Batteries in their vicinity_155.jpg Contour map of the sites of Fort Alexander, Fort Franklin, and Fort Ripley._62.jpg Contour map of the sites of Fort Bunker Hill and Fort Saratoga and their vicinity01.jpg Contour map of the sites of Fort Ethan Allen, Fort Marcy, and Batteries in their vicinity_3.jpg Contour map of the sites of Fort Whipple (now Fort Meyer) Fort Cass, and to within a short distance of Fort Woodbury_5.jpg Crest line and sections of Fort Berry_103.jpg Crest line and sections of Fort Williams_7.jpg Crest line and sections of Fort Williams_8.jpg Crest line of Battery back of Fort DeRussy._202.jpg Crest line of Battery Smeade_9.jpg Crest line of Fort Albany, 1866_140.jpg Crest line of Fort Carroll_164.jpg Crest line of Fort Craig._203.jpg Crest line of Fort Gaines._87.jpg Crest line of Fort Kearny with measurements._79.jpg Crest line of Fort Mahan with plan and sections of certain salients_7.jpg Crest line of Fort Slocum With dimensions._10.jpg Crest line of Fort Slocum With positions of gun platforms._11.jpg Crest line of Fort Stanton, as altered, with dimensions_12.jpg Crest line of Fort Sumner with dimensions_13.jpg Crest line of Fort Tillinghast_14.jpg Crest line of Fort Totten_15.jpg Crest line of Fort Ward with contours of site_16.jpg Crest line of Fort Ward with levelings of site_17.jpg Crest line of Fort Ward, Battery, and rifle pits with contours of site._18.jpg Crest line of Fort Whipple_19.jpg Crest line of Fort Whipple_20.jpg Crest line of Fort Whipple, Cass, and Woodbury showing their relative position with contours of their sites_21.jpg Crest line of Fort Worth_22.jpg Crest line of Front Strong_23.jpg Crest Line of Redoubt Kirby_6.jpg Crestline of Fort Woodbury_24.jpg Defense of Anacostia Bridge_138.jpg Defense of Aqueduct Road to the left of Battery Alexander_122.jpg Derrick for mounting 15 - inch guns_75.jpg Design for Draw Bridge._112.jpg Design for Draw Bridge._175.jpg Design for Draw Bridge01.jpg Design for fence to enclose Battery Rodgers_25.jpg Detail of gateway at Fort Ward_26.jpg Details of Magazine - Fort Ethan Allen._197.jpg Draw Bridge at Fort Albany, South of Potomac, 1866_35.jpg Drawing of unidentified fortification._185.jpg Drawings, sketches and studies of log casemates with iron clad embrasures for 15-inch and smaller guns_01.jpg Drawings, sketches and studies of log casemates with iron clad embrasures for 15-inch and smaller guns._111.jpg Drawings, sketches and studies of log casemates with iron clad embrasures for 15-inch and smaller guns._18.jpg Drawings, sketches and studies of log casemates with iron clad embrasures for 15-inch and smaller guns._19.jpg Drawings, sketches and studies of log casemates with iron clad embrasures for 15-inch and smaller guns._80.jpg Drawings, sketches and studies of log casemates with iron clad embrasures for 15-inch and smaller guns._81.jpg Drawings, sketches and studies of log casemates with iron clad embrasures for 15-inch and smaller guns.jpg Drawings, sketches and studies of log casemates with iron clad embrasures for 15-inch and smaller guns9_01.jpg Drawings, sketches, and studies of Bombproofs and counterscarp galleries_119.jpg Drawings, sketches, and studies of Bombproofs and counterscarp galleries_179.jpg Drawings, sketches, and studies of Bombproofs and counterscarp galleries_26.jpg Drawings, sketches, and studies of Bombproofs and counterscarp galleries_27.jpg Drawings, sketches, and studies of Bombproofs and counterscarp galleries_84.jpg Elevation for Fort Reno, 1866_27.jpg Elevation of gateway at Fort Stevens_28.jpg Extension of 200 pounder Traverse Circle, Battery Rodgers, 1864_29.jpg Flag Staff at Fort Circle._27.jpg Foot Bridge at Fort Reno, 1866_30.jpg Fort Albany near the intersection of the Columbia Turnpike and Arlington Road (plan and section), 1866_70.jpg Fort Barnard between Hunters Chapel and the Loudon and Hampshire Rail Road, 1866_176.jpg Fort Blenker Near Roches Mill_216.jpg Fort Bunker Hill - Arrangement for Traverse_213.jpg Fort Carroll. Traverse on right of front curtain._168.jpg Fort Carroll_134.jpg Fort Chaplin, with contours of ground._58.jpg Fort Chaplin._162.jpg Fort Corcoran - unfinished sketch._130.jpg Fort DeRussy. Measurement July 1863., 1863_157.jpg Fort Ellsworth on Shuters Hill near Alexandria, Virginia_23.jpg Fort Ethan Allen near Chain Bridge, Fairfax County, Virginia_22.jpg Fort Ethan Allen, 1861_51.jpg Fort Greble proposed alteration._154.jpg Fort Greble proposed alteration._155.jpg Fort Greble proposed alteration._195.jpg Fort Greble._84.jpg Fort Jackson Tete de Pont at South End of Long Bridge_136.jpg Fort Lincoln._11.jpg Fort Lincoln._114.jpg Fort Lincoln._12.jpg Fort Lincoln._148.jpg Fort Lincoln._149.jpg Fort Lincoln._188.jpg Fort Lyon Plans and Sections_187.jpg Fort Lyon Sections of Bomb Proofs and Magazine_76.jpg Fort Lyon_10.jpg Fort Lyon_147.jpg Fort Lyon_184.jpg Fort Lyon_8.jpg Fort Mansfield_111.jpg Fort Mansfield_112.jpg Fort Mansfield_39.jpg Fort Massachusetts (Fort Stevens) Plan, Sections, and Elevations_31.jpg Fort Reunion at Roches Springs, the Junction of the Alexandria and Columbia Turnpikes_32.jpg Fort Slocum - Profile of Left Gorge_33.jpg Fort Slocum with contours of ground in vicinity._34.jpg Fort Slocum with topography of vicinity._35.jpg Fort Slocum with topography of vicinity._36.jpg Fort Slocum with topography of vicinity._37.jpg Fort Slocum with topography of vicinity._38.jpg Fort Stanton, Bastionet No. 1_39.jpg Fort Thayer - Alteration of gun platforms, December 6, 1864_40.jpg Fort Totten - Section Through Bombproof, 1862_41.jpg Fort Totten Scarp Revetment_42.jpg Fort Totten with battery and rifle pits_43.jpg Fort Willard, 1866_192.jpg Fort Worth near the Theological Seminary, Fairfax County, Virginia_44.jpg Fortification plan_120.jpg Front pintle stone platform for 15-inch guns, straight parapet, Log revetment, gun and carriage mounted_163.jpg Gate at Benning's Bridge_62.jpg General Section of Bombproofs to be Built south of the Potomac.jpg Grand Horizontal Musketry Embrasure with Recesses - brick scarp.jpg Guard house at entrance - Fort Kearny._117.jpg Guard house at entrance of Fort Slocum., 1862_45.jpg Inside View of Gate at Fort Bunker Hill_211.jpg Interior crest of Forts Ethan Allen, C.F. Smith, Whipple, McPherson, Richardson, Ward, Morton, Farnsworth, Weed, Lyon, O'Rourke, Ellswoth, Worth_46.jpg Key to drawing of casemated Battery Fort DeRussy._53.jpg Large Bombproof - Fort Whipple_47.jpg Lines Between Fort Barnard and Fort Blenker_31.jpg Lines Between Fort Blenker and Fort Ward.jpg Lines Between Fort Cass, Fort Tillinghast and Fort Craig_95.jpg Lines Between Fort De Kalb, Fort Woodbury and Fort Cass_6.jpg Lines Between Fort Richardson and Fort Barnard_97.jpg Lines Between Fort Ward and Fort Worth_96.jpg Lines Between Fort Worth and Hunting Creek.jpg Lines of Washington - Fort Scott._48.jpg Lines of Washington - Site of Fort Barnard, Virginia, 1866_177.jpg Lines of Washington, Fort Barnard, Virginia, 1866_67.jpg Location and sections of Stone Magazine at Ethan Allen, 1865_198.jpg Magazine at Fort Greble._153.jpg Magazine at Fort_23.jpg Manner of closing Ventilators_115.jpg Map of Chain Bridge Position_92.jpg Map of the country between Bladensburg and Fort Dupont showing location of Forts Lincoln,Mahan,Chapein, Meigs, Dupont and Redoubt Rucker_63.jpg Map of vicinity of Cameron Run, North of Fort Lyon, Showing Blockhouses._2.jpg Map Showing the Topography of the Country and the Defenses in Front of Alexandria, Virginia with additional topography.jpg Map Showing the Topography of the Country and the Defenses in Front of Alexandria, Virginia_154.jpg Map, showing position of Blockhouses at Fairfax Station, Virginia_61.jpg Modified plan of circular revetment for 15 inch gun at Battery Rodgers, 1864_49.jpg Modified plan of circular revetment for 200 pounder gun, centre pintle at Battery Rodgers, 1865_50.jpg New Magazine, Traverse Parapet Etc. For Forts Greble and Carroll_58.jpg No. 1 Index Map for Sheets Extract of Military Map of N. E. Virginia, Showing Forts and Roads.jpg No. 10 Topographical map of areas between Fort Slocum, Fort Stevens, and Fort DeRussy_49.jpg No. 11 Topographical map of area between Battery Morris, Fort Saratoga, Fort Bunker Hill, Fort Slemmer & Fort Totten_74.jpg No. 12 Topographical map of area between Fort Mahan and Fort Thayer, including Fort Lincoln_48.jpg No. 13 Fort Weed - Plan, section & armament_73.jpg No. 14 Fort Ward - Plan & sections.jpg No. 15 Fort Tillinghast -Plan, sections & armaments._103.jpg No. 16 Fort Whipple -Plan & sections_102.jpg No. 17 -Fort C. F. Smith - Plan & sections.jpg No. 18 Fort Marcy - Plan & sections_12.jpg No. 19 Fort Ethan Allen -Plan & sections_101.jpg No. 2 Topographical map of areas between Fort Lyon, Fort O'Rourke, Fort Farnsworth, Fort Willard, and Battery Rodgers_14.jpg No. 20 Fort Bayard - Plan & sections_47.jpg No. 21 Battery Reno - Plan & sections of fort and battery.jpg No. 22 Fort Stevens - Plan & sections_46.jpg No. 23 Fort Slocum - Plan & sections.jpg No. 24 Tete Du Pont - Benning's Bridge Plan and Section_11.jpg No. 25 Fort Foote - Plan & sections_10.jpg No. 27 Plan and Sections of Block Houses Constructed for the Defense of Hunting Creek Valley_72.jpg No. 28 Defenses of Richmond - Topographical map showing Richmond and vicinity.jpg No. 29 Defenses of Washington. Table of Armament of Works South of the Potomac_44.jpg No. 3 Topographical map of area between Fort Worth, Fort Williams, Theological Seminary, and Fort Ellsworth.jpg No. 30 Defenses of Washington. Table of Armament of Works North of the Potomac.jpg No. 4 Topographical map of areas between Fort Ward, Fort Garesche, Fort Reynolds, Fort Barnard, Fort Berry, and Fort Scott_50.jpg No. 5 Topographical map of areas between Fort Tillinghast, Fort Craig, Fort Richardson, Fort Albany, Fort Runyon & Fort Jackson_105.jpg No. 6 Topographical map showing areas between Fort C. F. Smith, Fort Strong, Fort Woodbury, Fort Cass, Fort Whipple, Fort Corcoran, Fort Bennett, Fort Haggerty_104.jpg No. 8 Topographical map of areas between Locks 7 & 5 on Chesapeake and Ohio Canal, Fort Sumner, Batteries Benson, Bailey, Mansfield, Fort Mansfield, Fort Simmons & Fort Bayard.jpg No. 9 Topographical map of areas between Fort Kearny, Tennallytown, Fort Reno and Battery Smeade_13.jpg No.26 Battery Rodgers - Plan & sections_45.jpg North of Potomac, Gate of Fort Reno, 1866_51.jpg Northern Half of Boschkis Map of the District of Columbia with the Defenses North of the Potomac indicated thereon.jpg Old Fort Slocum arrangement for Magazines, ect._52.jpg Old Fort Slocum with study of new arrangement for magazines_53.jpg Outline of buildings and work on Traitor's Hill, Virginia_55.jpg Outline plan of Fort and batteries on Kennedy's Hill._43.jpg Outline plan of Fort Carroll Battery_165.jpg Outline plan of Fort Carroll Battery_166.jpg Outline Plan of Fort McPherson with leveling and contours of site._36.jpg Outline plan of Fort McPherson with levelings_143.jpg Outline Plan of Fort Ward with sections of magazines_54.jpg Outline plan showing armament of Fort Lyon_9.jpg Outline sketch of Fort Morton_108.jpg Passage way under parapet for battery between Fort Meig and Fort Dupont_2.jpg Passage way under parapet for battery between Fort Meig and Fort Dupont_3.jpg Plan & sections of Fort DeRussy._126.jpg Plan & sections of Fort DeRussy._158.jpg Plan & sections of Fort DeRussy._54.jpg Plan & sections of Fort Franklin_48.jpg Plan & sections of Fort Gaines._196.jpg Plan & sections of Fort Gaines._88.jpg Plan & sections of Fort Gaines._89.jpg Plan & sections of Fort Gaines._90.jpg Plan and section of Battery Carroll_132.jpg Plan and Section of Battery Martin Scott_73.jpg Plan and Section of Battery Ricketts and Plan and Section of Fort Wagner_57.jpg Plan and section of Battery Smeade_72.jpg Plan and Section of Battery Vermont_58.jpg Plan and section of Fort Blenker, 1863_174.jpg Plan and section of Fort Carroll_169.jpg Plan and Section of Fort Meigs and its extension_38.jpg Plan and section of Fort Morton_107.jpg Plan and Section of Fort Saratoga_59.jpg Plan and section of Fort Slemmer._73.jpg Plan and section of Fort Slocum_74.jpg Plan and section of Fort Slocum_75.jpg Plan and section of Fort Strong_76.jpg Plan and section of Fort Tillinghast_77.jpg Plan and Section of Fort Willard (Redoubt B)_60.jpg Plan and Section of Fort Willard and Armament_61.jpg Plan and section of Fort Williams_78.jpg Plan and section of Fort Williams_79.jpg Plan and Section of Fort Woodbury_62.jpg Plan and section of Fort Worth_80.jpg Plan and section of front pintle stone platform with straight parapet, breast height of logs. Gun and carriage mounted._9.jpg Plan and section of front pintle wooden platform for smaller guns, 1866_70.jpg Plan and Section of Magazine at Battery Ricketts (Fort Ricketts)_63.jpg Plan and Section of Magazine at Fort Woodbury_64.jpg Plan and section of magazine, Fort Greble._17.jpg Plan and section of magazines - Fort Carroll_167.jpg Plan and Section of North Magazine - Fort Whipple_65.jpg Plan and section of Old Fort Slocum_81.jpg Plan and section of Redoubt Cross - formerly Fort Ripley_82.jpg Plan and Section of Redoubt Kirby_66.jpg Plan and Section of South Magazine - Fort Whipple_67.jpg Plan and section of the fronts of Fort Sumner connecting Redoubts Davis and Kirby._83.jpg Plan and sections of Battery Garesche._47.jpg Plan and sections of Battery Garesche._86.jpg Plan and sections of Battery Jameson._122.jpg Plan and sections of Battery Jameson._80.jpg Plan and sections of Battery Kemble._116.jpg Plan and sections of Battery Morris_180.jpg Plan and sections of Battery Morris_71.jpg Plan and sections of Battery Rossell_84.jpg Plan and sections of Battery Smeade_85.jpg Plan and Sections of Block Houses Constructed for the Defense of Hunting Creek Valley_187.jpg Plan and sections of Bombproof, at Battery Jameson._121.jpg Plan and Sections of Fort Baker, 1866_68.jpg Plan and sections of Fort Bunker Hill_101.jpg Plan and sections of Fort C. F. Smith_86.jpg Plan and sections of Fort C. F. Smith_87.jpg Plan and sections of Fort C. F. Smith_88.jpg Plan and sections of Fort Carroll.jpg Plan and sections of Fort Carroll_60.jpg Plan and sections of Fort Carroll_61.jpg Plan and sections of Fort Cass._163.jpg Plan and sections of Fort Cass._59.jpg Plan and sections of Fort Chaplin..jpg Plan and sections of Fort Chaplin._96.jpg Plan and sections of Fort Circle., 1864_57.jpg Plan and sections of Fort Circle._131.jpg Plan and sections of Fort Circle._204.jpg Plan and sections of Fort Corcoran & armaments._160.jpg Plan and sections of Fort Corcoran._56.jpg Plan and sections of Fort Corcoran._95.jpg Plan and sections of Fort Craig & armaments._55.jpg Plan and sections of Fort Davis._127.jpg Plan and sections of Fort Davis._159.jpg Plan and sections of Fort Davis._24.jpg Plan and sections of Fort Davis._25.jpg Plan and sections of Fort Dupont._94.jpg Plan and sections of Fort Ellsworth._200.jpg Plan and sections of Fort Ellsworth._201.jpg Plan and sections of Fort Ethan Allen & armament._21.jpg Plan and sections of Fort Farnsworth_19.jpg Plan and sections of Fort Greble and Battery._18.jpg Plan and sections of Fort Kearny._120.jpg Plan and sections of Fort Kearny._16.jpg Plan and sections of Fort Kearny._194.jpg Plan and sections of Fort Kearny._44.jpg Plan and sections of Fort Lincoln._189.jpg Plan and sections of Fort Lincoln._41.jpg Plan and sections of Fort Marcy & armament schedule_182.jpg Plan and sections of Fort on Kennedy's Hill._115.jpg Plan and sections of Fort on Kennedy's Hill._77.jpg Plan and sections of Fort on Kennedy's Hill._78.jpg Plan and sections of Fort Simmons._89.jpg Plan and sections of Fort Simmons._90.jpg Plan and sections of Fort Snyder_91.jpg Plan and sections of Fort Stanton_92.jpg Plan and sections of Fort Stevens_93.jpg Plan and sections of Fort Stevens_94.jpg Plan and Sections of Fort Thayer_68.jpg Plan and sections of Fort Totten_95.jpg Plan and Sections of Fort Ward_69.jpg Plan and sections of Fort Ward_96.jpg Plan and sections of Fort Worth_97.jpg Plan and sections of Fort Worth_98.jpg Plan and sections of Guard House at Fort Stevens_99.jpg Plan and sections of magazine, at Battery Jameson._45.jpg Plan and Sections of Redoubt Davis_70.jpg Plan and Sections of South Traverse in Redoubt Davis_71.jpg Plan and sections of the two fronts of Fort Sumner connecting Redoubts Davis and Cross._100.jpg Plan and sections of the two fronts of Fort Sumner connecting Redoubts Kirby and Cross._101.jpg Plan and sections of two of the salients, with contours of ground in front at Fort Stanton_102.jpg Plan for Military Blockhouse_91.jpg Plan of 2 story block house (vertical logs)_86.jpg Plan of a Fortified Corral_28.jpg Plan of Balustrade for Bomb Proofs, 1864_85.jpg Plan of Battery Martin Scott, of Chain Bridge Battery and of Batteries opposite Fort Smith_6.jpg Plan of Battery Reno, November 1844_103.jpg Plan of Battery Rossell_104.jpg Plan of brick magazine, Fort Williams, 1863_119.jpg Plan of Chain Bridge Battery_30.jpg Plan of Embrasure, with log revetting and platform for siege guns_109.jpg Plan of Fort Albany showing heights above mean tidal level, 1866_69.jpg Plan of Fort Alexander, 1866.jpg Plan of Fort Baker, 1862_105.jpg Plan of Fort Baker, 1862_139.jpg Plan of Fort Barnard and the connected batteries, 1866_218.jpg Plan of Fort Bennett from Measurements Taken September 30, 1861, 1861_104.jpg Plan of Fort Blenker with topography of site._102.jpg Plan of Fort Blenker_173.jpg Plan of Fort Bunker Hill_172.jpg Plan of Fort Carroll_133.jpg Plan of Fort Corcoran._26.jpg Plan of Fort Craig._128.jpg Plan of Fort Haggerty_81.jpg Plan of Fort Kearny with topography of vicinity._119.jpg Plan of Fort Lincoln and Battery Jameson_42.jpg Plan of Fort Mahan with contours of site_145.jpg Plan of Fort Mahan with contours of site_74.jpg Plan of Fort Mahan_113.jpg Plan of Fort Marcy near Chain Bridge Fairfax County, Virginia._144.jpg Plan of Fort McPherson_1.jpg Plan of Fort Meigs_110.jpg Plan of Fort on Caton's Farm on Marlboro Road 1861. (Fort Dupont), 1861_93.jpg Plan of Fort on Stone's Farm at fork of Marlboro Roads (Fort Meigs), 1861_37.jpg Plan of Fort Reno, 1866_105.jpg Plan of Fort Reno, 1866_106.jpg Plan of Fort Strong_107.jpg Plan of Fort Tillinghast_108.jpg Plan of Fort Totten with contours of site and vicinity_109.jpg Plan of Fort Totten with topography of site and vicinity_110.jpg Plan of Fort Totten with topography of site and vicinity_111.jpg Plan of Fort Totten with topography of site and vicinity_112.jpg Plan of Fort Totten with topography of site and vicinity_113.jpg Plan of Fort Ward_114.jpg Plan of Fort Whipple_115.jpg Plan of Fort Whipple_116.jpg Plan of Fort Whipple_117.jpg Plan of Fort Worth, 1865_118.jpg Plan of fortification showing location of four blockhouses_30.jpg Plan of Gate (Showing manner of hanging) in passage way through traverse at Fort on Kennedy's Hill._14.jpg Plan of Guard House Fort Ellsworth._52.jpg Plan of Guard House Fort Ellsworth._91.jpg Plan of magazines and implement room Fort Cass._98.jpg Plan of magazines and implement room Fort Cass._99.jpg Plan of magazines Fort Strong, 1864_120.jpg Plan of portion of Fort Greble, with levels._83.jpg Plan of Shot Bucket for Elongated Shells_16.jpg Plan of step to facilitate the loading of 200 pounder guns at Battery Rodgers., 1865_121.jpg Plan of step to facilitate the loading of 200 pounder guns at Battery Rodgers., 1865_122.jpg Plan of Stone Magazine_117.jpg Plan of the bastioned front of Fort Baker, 1866_178.jpg Plan Section and Armament of Fort Ward_56.jpg Plan showing alteration of Fort Stanton_123.jpg Plan showing crest lines and relative position of Fort Alexander, Battery Alexander, Fort Franklin and Fort Ripley, 1866_34.jpg Plan showing cross section of fortification wall and defense_121.jpg Plan showing cross section of fortification wall and defense_184.jpg Plan showing cross section of fortification wall and defense_89.jpg Plan showing gun platform locations_182.jpg Plan showing gun platform locations_183.jpg Plan showing magazines, bomb-proofs, and position of gun platforms at Fort Stanton_124.jpg Plan showing magazines, bomb-proofs, and position of gun platforms at Fort Stanton_125.jpg Plan, section and armament of Fort Woodbury_126.jpg Plan, section, and armament of Fort Scott_127.jpg Plans & sections of Fort Lyon & armaments_185.jpg Plans & sections of Fort Lyon_146.jpg Plans & sections of Fort Lyon_186.jpg Plans and Notes of Gun Platform - Fort Whipple_128.jpg Plans and sections of Battery Cameron._135.jpg Plans and Sections of Fort Albany, 1866_219.jpg Plans and Sections of Fort Alexander, 1866_179.jpg Plans and sections of Fort Bayard, 1866_33.jpg Plans and sections of Fort Bayard_32.jpg Plans and sections of Fort Berry_175.jpg Plans and sections of Fort Berry_66.jpg Plans and sections of Fort Mahan_75.jpg Plans of Fort Bayard_217.jpg Plans of fortifications between Fort Reno and Battery Reno, January 1866_129.jpg Plans, sections & elevation of Battery Jameson., 1863_46.jpg Portion of a map showing Fort Alexander, Fort Ripley, Fort Franklin, Battery Benson, Battery Bailey, Fort Mansfield, and associated Batteries._158.jpg Position of Block Houses at Fairfax Court House_50.jpg Position of block houses at Vienna_130.jpg Project of Fort on Traitor's Hill_131.jpg Project of Fort on Traitor's Hill_132.jpg Proposed arrangement of rack and pinions for elevating or pressing the 15 inch gun_52.jpg Proposed arrangement of rack and pinions for elevating or pressing the 15 inch gun_53.jpg Proposed Arrangement of Screws as Substitutes for the Eccentric Gear on the 15 inch Gun Carriage, 1864_54.jpg Proposed barracks for Fort Strong_133.jpg Proposed counterscarp gallery at Fort Lincoln._13.jpg Proposed Modification of the Top Carriage of the 15 inch Gun for the Purpose of Diminishing the Friction of the Trunions_171.jpg Proposed Tete de Pont End of Long Bridge, Virginia Side_29.jpg R. P. Parrot's Center Pintle 100 Pounder Carriage and Chasses, West Point Foundry., 1862_38.jpg R. P. Parrott's 200 Pounder Cannon With Carriage and Chassis_36.jpg R. P. Parrott's 200 Pounder Cannon With Carriage and Chassis, 1862_160.jpg R. P. Parrott's 8 Inch Casemate Carriage and Chassis, 1863_35.jpg R. P. Parrott's 8 Inch Rifled Cannon Front Pintle Carriage and Chassis, 1863_159.jpg R. P. Parrotts Center Pintle 100 Pounder Carriage and Chassis, 1862_162.jpg R. P. Parrotts Centre Pintle 200 pounder. Carriage and Chassis, Gun Mounted_161.jpg R.P. Parrotts 100 pounder Center Pintel chassis.jpg Redoubt A - Fort Lyon (Fort Weed)_134.jpg Redoubt B of Fort Lyon_49.jpg Redoubt Cross (Fort Sumner) - formerly Fort Ripley_135.jpg Redoubt Cross (Fort Sumner) - formerly Fort Ripley_136.jpg Redoubt Cross (Fort Sumner) - formerly Fort Ripley_137.jpg Redoubt Cross (Fort Sumner) - formerly Fort Ripley_138.jpg Redoubt Cross (Fort Sumner) - formerly Fort Ripley_139.jpg Redoubt near Fort Stanton_143.jpg Redoubt No. 1 (Fort Strong) of the line of defenses in front of Arlington., October 3, 1861_140.jpg Redoubt No. 2 (Fort Woodbury) of the Line of Defenses in Front of Arlington_141.jpg Redoubt No. 4 (Fort Tillinghast) of the line of defenses in front of Arlington_142.jpg Redoubt No. 5 (Fort Craig)_129.jpg Redoubte [Redoubt] No. 3 (Fort Ramsay) of the line of Defenses in front of Arlington., 1861_28.jpg Reduced copies of Sheet 31 (Plans of Fort Bunker Hill).jpg Reduced copies of Sheet 31 (Plans of Fort Bunker Hill)_64.jpg Reduced copies of Sheet 31 (Plans of Fort Bunker Hill)_65.jpg Rifle Pit of Brent's Hill_215.jpg Roof of Block House on Aqueduct Road to the Left of Battery Alexander_90.jpg Section (A - B) of Bombproof Fort Ethan Allen._123.jpg Section of Bomb Proof and Traverse - Fort Slocum., 1862_144.jpg Section of Bombproof Block House_60.jpg Section of Bombproof, Traverse Parapet, Ect._180.jpg Section of Bombproof, Traverse Parapet, etc. For Forts Greble, Carroll and Stanton.jpg Section of Centre pintle stone platforms with circular parapet. Breast height of log. Gun & carriage mounted._39.jpg Section of Counterscarp gallery, Showing Loophole for Infantry_59.jpg Section of covered way between Forts Thayer and Lincoln, June 21, 1863_146.jpg Section of magazine entrance - Fort Greble and Carroll._152.jpg Section of Magazine to right of gateway at Fort Ethan Allen._156.jpg Section of Magazine, Traverse Parapet, ect._56.jpg Section of magazines at Forts Mahan, Meigs, Dupont, Davis, Baker, Stanton & Snyder_83.jpg Section of passage way through traverse parapet - Forts Greble, Carroll and Stanton._151.jpg Section of proposed covered way between Fort Meigs and its extension_4.jpg Section of proposed double covered way between Fort Meigs and Battery between Meigs and Dupont_72.jpg Section of Stone magazine of Fort Stanton_145.jpg Section of Stone Magazine, with Brick Arches_177.jpg Sections Fort Ellsworth._92.jpg Sections of Battery Garesche._85.jpg Sections of bombproof & magazine of Fort Lyon, 1865_40.jpg Sections of bombproofs and magazines at Fort Ward, March 1864_148.jpg Sections of Fort Slocum_147.jpg Sections of magazine at Battery Rodgers showing storage of powder._149.jpg Sections of magazine at Battery Rodgers., 1865_150.jpg Sheet 1. Tabular Statement of Forts Surrounding Washington, D.C._167.jpg Sheet 3. Tabular Statement of Forts Surrounding Washington, D.C._166.jpg Sheet 4. Armament of Forts and Batteries, [Defenses] of Washington North of Potomac., 1865_43.jpg Sheet 5. Tabular Statement of Forts Surrounding Washington, D.C., 1862_71.jpg Sheet 6. Tabular Statement of Forts Surrounding Washington, D.C._42.jpg Sheet 7. Sketches of Forts Surrounding, Washington, D.C._165.jpg Sheet 8. Armament of Forts and Batteries, [Defenses] of Washington South of Potomac._41.jpg Sketch and table, showing angles from ends of base lines to points on crest line (Fort Albany), 1866_141.jpg Sketch of a Fougasse_169.jpg Sketch of block house with Stockade Bastions, four blockhouses within stockade and block house with Redan Stockade_88.jpg Sketch of Entrance of Fort Meigs_109.jpg Sketch of Fort Bayard_31.jpg Sketch of Fort Bunker Hill Battery.jpg Sketch of Fort Bunker Hill Battery_100.jpg Sketch of Fort Kearny - Plan._15.jpg Sketch of Fort Kearny - Plan._150.jpg Sketch of Fort Meigs and its extension_5.jpg Sketch of Fort Meigs with contours of site_181.jpg Sketch of fortification_181.jpg Sketch of fortification_29.jpg Sketch of fortification_87.jpg Sketch of fortified poly-gon of 12 sides_151.jpg Sketch of gateway - Fort Whipple_152.jpg Sketch of magazine_001.jpg Sketch of magazine_01.jpg Sketch of magazine._1.jpg Sketch of magazine._116.jpg Sketch of magazine._118.jpg Sketch of magazine._178.jpg Sketch of magazine._55.jpg Sketch of magazine4_01.jpg Sketch of one of the salients of Fort Greble._82.jpg Sketch of ponton of Battery Cameron._207.jpg Sketch of proposed alteration of Fort Mahan, 1864_183.jpg Sketch of Redoubt D at Fort Lyon_190.jpg Sketch of Tete de pont for Navy Yard Bridge.jpg Sketch of Tete de pont for Navy Yard Bridge_170.jpg Sketch related to magazine._20.jpg Sketch showing buildings and outline of proposed defenses on Cooper's Hill._161.jpg Sketch showing crest line and positions for guns, in battery proposed for Big Chestnut Hill._97.jpg Sketch showing elevation of chasis rail at Battery Cameron._208.jpg Sketch showing position of Forts Saratoga and Thayer with contours of ground in their vicinity._153.jpg Sketch showing settlement of fun platforms at Battery Kemble._193.jpg Sketch showing several methods proposed for mounting in Battery 200 pounder Parrotts._15.jpg Sketch showing the armament of Fort Ethan Allen., 1862_125.jpg Sketch showing the proposed method of defending the bridge at Little Falls, 1861_137.jpg Sketch, showing the defenses of Dodge's Hill, from Fort Lincoln to Eastern Branch., 1863_191.jpg Sketches of emplacements for 100 pounder at Fort Totten_154.jpg Sketches of emplacements for 100 pounder at Fort Totten_155.jpg Sketches of emplacements for 100 pounder at Fort Totten_156.jpg Sketches of magazine._176.jpg Sketches of magazine._57.jpg Sketches of magazines_24.jpg Sketches of magazines._113.jpg Sketches of magazines._22.jpg Sketches of magazines._25.jpg Sketches of magazines._82.jpg Sketches of Rifle Pits Connecting Forts Between Potomac & Fort Richardson, 1862_157.jpg Sketches of various unidentified fortifications_157.jpg Sketches of wrought Iron Turret for two 15 inch guns_17.jpg Sketches of wrought Iron Turret for two 15 inch guns_79.jpg Sketches related to magazines and gun emplacements_114.jpg Sketches related to magazines and gun emplacements_21.jpg South Magazine - Fort Whipple_158.jpg South Magazine - Fort Whipple_159.jpg Stone magazine at Fort Ethan Allen, 1865_124.jpg Stone magazine at Fort Ethan Allen, 1865_199.jpg Stone magazine at Fort Ethan Allen_20.jpg Study of magazines and bombproofs, Fort Stanton_160.jpg Survey of Rifle Pit, Etc., Between Forts Ward and Garesche, with Rough Sketches of Contour, 1864_4.jpg Tabular statement of armament of Forts and Batteries and vacant platforms in defenses North of the Potomac_161.jpg Target in River, Hit by Shot from pounder, Charge 43 pounds_108.jpg Tete de pont for Benning's Bridge_209.jpg Tete de pont for Benning's Bridge_63.jpg The Line Between Bladensburg Road & Fort Slemmer_67.jpg The Line Between Broad Branch and Rock Creek Showing Battery Smeade, Fort DeRussy, and Battery Kingsburry_99.jpg The Line Between Fort Bunker Hill & Saratoga_66.jpg The Line Between Fort Dupont and Fort Meigs Extension_98.jpg The Line Between Fort Saratoga and Thayer, Containing Fort Saratoga, Battery Morris, and Fort Thayer_65.jpg The Line Between Fort Slemmer & Fort Bunker Hill_32.jpg The Line Between Fort Slocum & Bladenburg Road_33.jpg The line between Fort Sumner and Powder Mill Branch, showing Battery Alexander, Fort Sumner, and Battery Benson_34.jpg The Line Between Fort Thayer and Fort Lincoln_64.jpg The Line Between Forts Stevens & Slocum_7.jpg The Line between Powder Mill Branch and the River Road, showing Battery Bailey, Battery Mansfield, Fort Mansfield, Battery Simmons, Fort Simmons, and Fort Bayard.jpg The line between the River Road and Broad Branch, showing Fort Reno, Battery Reno, Battery Rossell, Fort Kearny and Battery Terrill_68.jpg Topo map between Locks 7 & 5 on Chesapeake and Ohio Canal, Fort Sumner, Batteries Benson, Bailey, Mansfield, Fort Mansfield, Fort Simmons & Fort Bayard._168.jpg Transverse Section, magazine at Battery Rodgers._162.jpg Unfinished pencil plan of Fort Stanton_166.jpg Unfinished pencil plan of Fort Stanton_167.jpg Unfinished Sketch of Fort Stevens_163.jpg Unfinished Sketch of Fort Stevens_164.jpg Unfinished Sketch of Fort Stevens_165.jpg Unfinished topographical sketch of site of Fort Slocum_168.jpg Wooden platform, centre Pintle - for Parrotts 100 pounder Rifle - Gun and carriage mounted_37.jpg

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