Blueline. "Prepared under the direction of: M. Parvis.", Imprint: [West Lafayette, Ind.] : Indiana State Highway Commission, 1949., Dimensions: 88 x 104 cm; Scale: 1:63,360, Coordinates: W0864100 W0861500 N0393800 N0392000
Parvis, M. (1949). Drainage map of Morgan County Indiana. State Highway Commission of Indiana. https://purl.dlib.indiana.edu/iudl/images/VAC3073/VAC3073-M-00757 (map)