Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs. Designating symbol SX; form of individual image numbering: SX-1-[number], SX-2-[number], SX-3-[number], or SX-4-[number]."Date of completion 08-14-37" Flown by Gatschet 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 1.9 pages61 × 51 cmislandora: api_560https://digital.lib.uiowa.edu/node/259737engUnited States. Agricultural Adjustment AdministrationGatschet Aerial SurveysUniversity of Iowa. Libraries. Map CollectionPublicPoweshiek County, Iowa, 1937, aerial photomosaic indexImageryIowa--Poweshiek CountyIowa1930-1940University of Iowa