Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs. Designating symbol BKC. Form of individual image numbering: BKC-1F-[number], BKC-2F-[number], or BKC-3F-[number]."Flying completed 7-17-49." Flown by Woltz Studios, Des Moines, Iowa."Approximate scale, 1:20,000" [refers to individual images from which mosaic was made].
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