This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
first lieutenant w. willard willard clifton hogan special collection photo outdoor monochrome Catalog Title First Lieutenant W. Willard Clifton Hogan Special Collection Photo Additional Information Unidentified man W. Clifton Hogan b. d. served in the U.S. Infantry from before becoming First Lieutenant for the Air Service in Aeronautics