Title supplied by cataloger based on information from sheet label. Image is a photoreduction of the mosaic created from original aerial photographs. Designating symbol BKM; form of individual image numbering: BKM-1-[number], BKM-2-[number], BKM-3-[number], BKM-4-[number], BKM-5-[number], or BKM-7-[number]. Survey began in 1938."Date of completion Jan. 30, 1939." Flown by Iowa Aerial Surveys, 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/
