Title supplied by cataloger based on information from sheet label. Image is a photoreduction of the mosaic created from original aerial photographs. Designating symbol BZW. Form of individual image numbering: BZW-1K-[number], BZW-2K-[number], BZW-3K-[number], BZW-4K-[number], or BZW-5K-[number]."Flying completed 9-3-52" 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/