TY  - BOOK
TI  - Topographic Map - Maryland Brandywine Quadrangle (February 1913, reprinted 1946)
PY  - 1913///, reprinted 1946
PB  - United States Department of the Interior, Geological Survey
UR  - https://tudorhall.stmaryshistory.org/maps/map-072.pdf
ER  -