Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs. Designating symbol FR form of individual image numbering: FR-10-[number], FR-13-[number], FR-14-[number], FR-15-[number], FR-16-[number], or FR-17-[number]. Date of publication inferred from dates on individual photographs within the mosaic. Flown by Wallace Aerial Surveys, Spokane, Wash."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/