Drainage map, Morgan County, Indiana: prepared from 1939 AAA aerial photographs
Description
Blueline. 'Prepared under the supervision of: M. Parvis.' Scale approximately 1:63,360; Polyconic proj. By State Highway Commission of Indiana at Purdue University.
Parvis, M. (1949). Drainage map, Morgan County, Indiana: prepared from 1939 AAA aerial photographs. State Highway Commission of Indiana. https://purl.dlib.indiana.edu/iudl/images/VAC3073/VAC3073-M-00757 (map)