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-1AA-[number], BKV-2AA-[number], or BKV-3AA-[number]."Flying completed 9-4-60" Flown by Aeroflex Corporation, Robinson Aerial Surveys Division, Newark 7, N.J."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/