Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs. Designating symbol BJY; form of individual image numbering: BJY-1-[number], BJY-2-[number], BJY-3-[number], BJY-4-[number], BJY-5-[number], or BJY-6-[number]. "Date of completion Ocotober 5, 1938". Flown by Iowa Aerial Surveys, Des Moines, Iowa. "Approximate scale, 1:20,000" [refers to individual images from which mosaic was made]. Library's copy 2 consists of photographic negatives (4 x 5 in.) corresponding to each of the images in its copy 1. Contact the Map Collection at The University of Iowa Libraries: http://www.lib.uiowa.edu/maps/contact/