Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs. Designating symbol FR. Form of individual image numbering: FR-1K-[number], FR-2K-[number], FR-3K-[number], FR-41K-[number], FR-5K-[number], or FR-6K-[number]. "Flying completed 8-21-52". Flown by Aero Exploration Company, Tulsa, Oklahoma. "Approximate scale, 1:20,000" [refers to individual images from which mosaic was made]. Contact the Map Collection at The University of Iowa Libraries: http://www.lib.uiowa.edu/maps/contact/