Military map showing the topography of the country around harper's ferry va. Including maryland, loudoun, and bolivar heights, and portions of south and short mountains, with the positions of the defensive works, also the junction of the potomac & shenandoah rivers, and their passage through the blue ridge. Surveyed from 3 august to 30 september 1863 under the direction of capt. N. Michler, corps of engrs u. S. Army, by major john e. Weyss, principal assistant, engineer department, army of the potomac. Date: 1863.
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