Title supplied by cataloger based on information from sheet label. Image is a photoreduction of the mosaic created from original aerial photographs. Designating symbol BKK. Form of individual image numbering: BKK-1F-[number], or BKK-2F-[number]."Flying completed 7-10-49." 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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