Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs. Designating symbol BKV. Form of individual image numbering: BKV-1F-[number], BKV-2F-[number], BKV-3F-[number], BKV-4F-[number], or BKV-5F-[number]."Flying completed 8-24-49." Flown by Woltz Studios, Des Moines, Iowa."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/