Hogan's papers document his military medical career through his Navy correspondence, clippings about his career successes, speeches given as Surgeon General, Navy photographs, and reports of his tours. His correspondence also includes a smaller amount of personal letters, though they also largely touch on the topic of his career. Clippings include biographic profiles and articles published by Hogan. Scrapbooks contain newspaper articles relating to Hogan's Navy service, ephemera, and a small amount of Navy correspondence. Two scrapbooks cover his service during World War II, while the remaining scrapbooks and photograph albums date from his time as Rear Admiral and Naval Surgeon General. The photographs are official Navy press shots that document Hogan's professional travel and events.