Title supplied by cataloger based on information from sheet label. Image is a photoreduction of the mosaic created from original aerial photographs. Designating symbol TF. Form of individual image numbering: TF-1B-[number], or TF-2B-[number]."Flying completed July 29, 1941." Flown by Park Aerial Surveys, Inc. Louisville, Kentucky. "Approximate scale, 1:20,000" [refers to individual images from which mosaic was made].
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