A photograph taken by Sgt. Mackenzie, on February 18th, 1919, during World War I. The image shows a scene at Balloon School in Arcadia, California. The caption indicates the process of changing observers. The photograph was reviewed and approved by the Censor on March 21st, 1919, and was issued with the notes numbered 47869.

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Size: 8525px × 5802px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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