Interstate Map Company circa 1930
There is no date on map. Cataloged by Penn State as a 190-? map.
Shows bus routes
16 Castle Shannon, 17 Monitor Street and 18 McKeesport begun in the first half of 1930. Does not show bus route 19 Highland Park opened in December 1930.
Google Books lists a 1931 Red Book Information and Street Guide of Pittsburgh, Penna published by Interstate Map Company. No source or images shown.
Map courtesy of Pennsylvania State University Donald W. Hamer Maps Library
200 dpi DjVu (10MB)
200 dpi PDF (7MB)