Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs. Designating symbol GC. Form of individual image numbering: GC-1R-[number], GC-2R-[number], GC-3R-[number], or GC-4R-[number]."Flying completed 6-28-56" Flown by Woltz Studios, Inc. Des Moines, Iowa."Approximate scale, 1:20,000" [refers to individual images from which mosaic was made].
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