The Negatives series is composed of aircraft: civilian and military, domestic and foreign, mostly fixed, but some movable wing. Foreign models include examples from the Royal Air Force and Royal Navy (British), Germany (WW II), Japan (WW II), and the Royal Canadian Air Force. Some of the domestic and foreign airplane manufacturers represented are: Aeromarine-Klemm, American, Arrow, Avro, Beech, Buhl, Bunyard, Cessna, Chester, Colonial, Command-Aire, Consolidated, Consolidated/Convair, Eaglerock, Ercoupe, Fairchild, Fleet, Ford, General, Howard, Keystone-Loening, Kinner, Kreider-Reisner, Laird, Lambert, Loening, Luscombe, Martin, McDonnell, Meyers, Monocoupe, Monospar, New Standard, Noorduyn, Pasped, Percival, Porterfield, Rearwin, Republic, Seversky, Spartan, Star, Stinson, Supermarine, Swallow, Taylor, Travel Air, Uppercu-Burnelli, Vought. Some of the helicopter and autogiro manufacturers are: Brantley, Carlat, Doman, Flettner, Jovanovich, Kaman, Kellett, Platt-Le Page, Sikorsky.

Most of the images are devoid of spectators, and often the same aircraft is photographed from several angles. Several of the views show the aircraft in flight, but the majority are taken on the ground. The aircraft appear to have been photographed before and after World War Two, but they are undated. The collection was apparently purchased, but not photographed, by du Pont. Photographers' names are not recorded, but a letter-to-the-editor in the American Aviation Historical Society Journal (Winter 1979) identifies several men (Edward Deigan, Howard Levy, Bill Pinnell, and Warren Shipp, the letter's author) as the photographers. The images date from 1930 to 1950. Some of these negatives have had photographic prints made from them. The negatives numbers are the same as the folder numbers.