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  • Map of a reconnoissance [sic] of the approaches to Philadelphia showing the positions and lines of defence on the west front of the city /

    Topographic map of western Philadelphia and small adjacent parts of Montgomery and Delaware counties showing 1st- and 2nd-order Civil War earthworks and batteries. Relief shown by contours, hachures, and spot heights. Pen-and-ink, red ink (contours), and watercolors. Former ownership rubber-stamping to left of title: U.S.C. & G. Survey, Library and Archives, no. 1. "Acc. no. 54399" and "854 ST 1863" (former Coast Survey numbers) ...

    • Contributor: United States Coast Survey - Bache, A. D. (Alexander Dallas) - Whiting, Henry L.
    • Original Format: Maps
    • Date: 1863
  • Map of a reconnaissance of the approaches to Philadelphia showing the positions and lines of defence on the north front of the city /

    Topographic map of the northern part of Philadelphia County and small adjacent part of Montgomery County showing proposed 1st-, 2nd-, and 3rd-order Civil War batteries. Signed in handwriting: George Davidson, Asst. Engr. Fortifications. Pen-and-ink, red ink (contours), and watercolors. Former ownership rubber-stamping below title: U.S.C. & G. Survey, Library and Archives, no. 127. "No. 2865X" and "854W 1863" (former Coast Survey numbers) handwritten in ...

    • Contributor: United States Coast Survey - Bache, A. D. (Alexander Dallas) - Davidson, George
    • Original Format: Maps
    • Date: 1863
  • Map of a reconnaissance of the approaches to Philadelphia showing the positions and lines of defence on the north front of the city /

    Topographic map of northern Philadelphia and small adjacent part of Montgomery County showing Civil War earthworks and batteries. Relief shown by contours and hachures. Signed in handwriting (brown ink): George Davidson, Assistant Engineer Fortifications. Pen-and-ink, red ink (contours), and watercolors. Former ownership rubber-stamping at foot of title: U.S.C. & G. Survey, Library and Archives, no. 126. "No. 2868X" and "854W 1863" (former Coast Survey ...

    • Contributor: United States Coast Survey - Bache, A. D. (Alexander Dallas) - Davidson, George - Fauntleroy, A. R.
    • Original Format: Maps
    • Date: 1863