Dempsey, W. J., cartographer.Includes text and location map.Imprint: [Washington, D.C.] : For sale by U.S. Geological Survey, 1950Dimensions: 60 x 74 cm; Scale: Approximately 1:64,000Coordinates: W0863135 W0860333 N0414538 N0412601JPEGf92bbd4a-d691-40cb-b085-35a854186bd4G4093.S2C93 1950 .D4engGeological Survey (U.S.)PublicGeomagnetismTotal intensity aeromagnetic map of St. Joseph County, Indiana relative to arbitrary datumMapsIndianaIndiana--Saint Joseph County1950Indiana University