TY  - BOOK
TI  - Topographic Map - St. George Island, Maryland Quadrangle (1968, photoinspected 1973)
PY  - 1968///, photoinspected 1973
CY  - Washington, D. C.
PB  - United States Department of the Interior, Geological Survey
UR  - https://tudorhall.stmaryshistory.org/maps/map-223.pdf
ER  -