Grand Calumet Aerials - 1965 (EPA) --
1965 Aerial Photography of Northwestern Lake County, Indiana (1:23,000)
The aerial photography from the four-volume series (EPA, 1991) titled "Northwest Indiana Site
Inventory and Landuse/Landcover Study" was scanned, digitized, and georeferenced to create a
Geographic Information System (GIS) database as part of a joint project by the IGS, IDEM, and
the USACE named "Conversion of Historical Data to GIS Format for Grand Calumet Feasibility Study."
Five selected dates; 1951, 1958, 1965, 1980, and 1990, of black-and-white and conventional color
aerial photography were provided by the EPA report.
Data set includes 38 aerial photo tiles from 1965.

FGDC Metadata: GRAND_CAL_AERIALS_1965