Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs. Designating symbol BKP. Form of individual image numbering: BKP-1AA-[number], BKP-2AA-[number], or BKP-3AA-[number]."Flying completed 9-25-60" Flown by The Aeroflex Corporation, Robinson Aerial Surveys Division, Newton, 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/