Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs. Designating symbol BKB. Form of individual image numbering: BKB-1HH-[number], BKB-2HH-[number], BKB-3HH-[number], BKB-4HH-[number], or BKB-5HH-[number]."Year Flown 1967" Flown by Utility Data Corporation, Kansas City, MO."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/