The Harold E. Hartney Collection contains photographs, correspondence, clippings, and paper ephemera relating to Hartney's World War I and postwar career, as well as some family materials. The bulk of the collection was gathered by his wife Irene Hartney and assembled into a scrapbook, then later disassembled for digitization by the family. Copies and inventories of the scans are included. The materials trace Hartney's life from his service as a squadron and group commander in France during World War I; to the interwar period in which he raced aircraft, wrote a book on his World War I experience, and served as an air safety investigator; to his air transport efforts during World War II.