Flights flown between August 14, 1938 and August 21, 1938 by Woltz Studios, Inc., for the U. S. Dept. of Agriculture, Agricultural Adjustment Administration. Photos numbered RS-11-960 through RS-19-1659. Scale not given. Stereoscopic coverage. Only indexes are georeferenced.
Rock Island County (Ill.) / W0910500-W0901000 / N0414700-N0412000
Illinois State Geological Survey
381 remote-sensing images, 2.18 gigabytes, average file 5.86 megabytes
Scanned from 7 x 9 contact prints (nominal scale ca. 1:20,000) on Crosfield Celsis 6200 drum scanning system at 750 dpi. Quality assurance target not published but available by contacting the Illinois State Library Map Dept. MrSID files compressed at a target ratio of 6:1. Uncompressed TIFF images on cd available from the Illinois State Library Map Dept.