• Contours of Union forts on south side of Potomac, 1862 [map].

    • Contributor: Sneden, Robert Knox
    • Original Format: Maps
    • Date: 1861
  • [Map of northern Virginia and part of Maryland].

    Relief shown by shading. Shows area south of Frederick, Maryland to Colchester, Virginia and west of Baltimore, Maryland to Harpers Ferry, West Virginia, including fortifications at Munson Hill. Note on verso obscured by mounting: From Capt. James W. Abert, U.S. Army Topog. Engrs. LC copy annotated in ink: Capt. James W. Abert, Capt. U.S. Army Topog. Engrs. DLC Title, date, and scale from Stephenson's ...

    • Original Format: Maps
    • Date: 1862