The collection is comprised of a small photograph album, loose photographs, a prisoner of war diary, and assorted research documents pertaining to the World War I service and prisoner of war (POW) experience of Lieutenant Lionel Cherry Gilmour (1891-1973), pilot of the Royal Air Force (RAF) and its predecessor, the Royal Flying Corps (RFC).

David O. Hill (1939-) was a pilot for Seaboard World Airlines (SWA). Hill was also SWA's archivist and historian. The collection relates to the company history, personnel, and operations of Seaboard World Airlines (SWA), from its establishment in 1946 to 1980 when it merged with Flying Tigers Line and is comprised primarily of textual materials, the bulk of which are scrapbooks; but also includes photographic materials, including prints, slides, and negatives; and a single DVD.

Norah Ellen O'Neill (1949-2017), from Seattle, Washington, was a commercial pilot and an aviation pioneer. The collection contains a scrapbook, book reviews, newsletters and serials, photographs, pilot log books, and correspondence related to her flight career and personal life.