TY  - BOOK
TI  - Map - Potomac River in Four Sheets (1862 - 1868)
PY  - 1862/// - 1868
PB  - Superintendent of the Survey of the Coast of the United States
N2  - Sheet 1 - Entrance to Piney Point (1868)
Sheet 2 - Piney Point to Lower Cedar Point (1862)
Sheet 3 - Lower Cedar Point to Indian Head (1862)
Sheet 4 - Indian Head to Georgetown (1864)
UR  - https://tudorhall.stmaryshistory.org/maps/map-133.pdf
ER  -