Title supplied by cataloger based on information from sheet label. Image is a photoreduction of the mosaic created from original aerial photographs. Designating symbol SP. Form of individual image numbering: SP-1K-[number], SP-2K-[number], or SP-3K-[number]."Flying completed 9-9-52" 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/
