TY  - BOOK
ED  - Maryland Department of Transportation, State Highway Adminstration
TI  - Map - Federal Aid Systems, St. Mary's County Maryland (1976)
PY  - 0000///July 11976///
N2  - Map of St. Mary's County showing primary and secondary roads subject to federal aid
UR  - https://tudorhall.stmaryshistory.org/maps/map-088.pdf
ER  -