TY  - BOOK
TI  - Topographic Map of Maryland, Virginia, Washington D.C. (1947)
PB  - Army Map Service
N1  - This is two maps taped together - NJ 18-1 (Baltimore/Washington D.C.)  and NJ 18-4 (Southern Maryland)  Hand-annotated with locations on map of microwave towers.  Notations at bottom with Lat/Long and height of towers.
UR  - https://tudorhall.stmaryshistory.org/maps/map-125.pdf
ER  -