Access Illinois Historical Aerial Photography by County

Digital versions of ILHAP photographic paper prints are available by county as compressed <filename>.sid files.

ILHAP Scanned Prints are Available for Viewing and Download for 62 Counties

1938 - Adams 1938 - Alexander 1941 - Boone 1938 - Brown 1941 - Bureau 1940 - Calhoun 1938 - Cass 1940 - Champaign 1938/1939 - Clark 1938 - Clinton 1938/1939 - Coles 1938/1939 - Cook 1939 - Cumberland 1941 - DeWitt 1940 - Douglas 1939 - DuPage 1941 - Edwards 1938 - Fulton 1938 - Gallatin 1937/1938 - Greene 1940 - Grundy

1938 - Hancock 1938 - Hardin 1938 - Jackson 1941 - Jersey 1946/1947 - JoDaviess 1938 - Johnson 1939 - Kane 1939 - Kankakee 1939 - Kendall 1940 - Knox 1939 - Lake 1939 - LaSalle 1939 - McHenry 1941 - Madison 1939 - Marshall 1939 - Mason 1938 - Massac 1939 - Menard 1940 - Monroe 1941 - Morgan 1939 - Peoria

1938 - Perry 1939 - Pike 1938 - Pope 1938 - Pulaski 1939 - Putnam 1940 - Randolph 1940 - St. Clair 1938 - Saline 1938/1939 - Sangamon 1938 - Schuyler 1941 - Scott 1937/1938 - Stark 1939 - Tazewell 1938 - Union 1940 - Vermilion 1938 - Washington 1939 - Will 1938 - Williamson 1939 - Winnebago 1939 - Woodford

Individual prints are organized in tables by county; table cells containing the files which best delineate the county boundary are highlighted in light blue. Flight lines for each county are oriented either west to east or north to south. Identical exposure numbers occur within a table because exposures are furthur classified in the file name by roll number.

Links for each scanned print are displayed in the county tables by exposure number; the shape of the county will be distorted in the flight line direction. Prints located well outside the county boundary were not scanned; refer to the adjacent county to obtain photographs of the subject area. Prints that are unavailable within a county boundary were missing from all known photograph collections at the time of scanning.

Reference indexes for each county are housed at the University of Illinois Map and Geography Library. These indexes are either hand-drawn representations of approximate print locations (line index), or photograph-mosaics of the prints flown for a single county (photo index). Compressed digital versions of these indexes are available for download or viewing on the Web Pages listed above. These indexes can be difficult to interpret. The majority of counties are depicted on one index sheet, but some counties are divided into multiple sheets.

Index data layers for each county are also offered in ESRI Shapefile format on the Web Pages listed above. These indexes contain record-level metadata for each photograph, including digital file name, flight line, county name, USDA county code, roll and exposure numbers, agency which contributed the original photographic paper print for scanning, date flown, time flown (if available), CD-ROM on which the original file is stored at the ISGS, and any additional notes.