File:Fort Saratoga — Topographical map, 1st Brigade, defenses north of Potomac, Washington, D.C. (EAST).jpg
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Fort_Saratoga_—_Topographical_map,_1st_Brigade,_defenses_north_of_Potomac,_Washington,_D.C._(EAST).jpg (571 × 489 pixels, file size: 52 KB, MIME type: image/jpeg)