Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs. Designating symbol FQ form of individual image numbering: FQ-2-[number], FQ-4-[number], FQ-11-[number], or FQ-13-[number]. Date of publication inferred from dates on individual photographs within the mosaic. Flown by Gatschet 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/