The Alan Nielsen Isometric Aircraft Drawings is a smalll collection comprised of 32 isometric drawings by Alan Nielsen of 21 different aircraft, done from 1993 to 2008. All of the drawings are on 8.5x11" sheets of paper with the drawing on one side and background information about the aircraft on the verso.

The collection consists of photographs, military personnel documents, and wartime ephemera related to the Royal Air Force career of Eric G. Peter during and after World War I.

Larry Trollen Collection of Heritage of the Air Lithographs is a set of 11x14" lithographs issued by the Leach Corporation, circa late 1950s. The lithographs depict various aircraft and include a printed caption providing context. There are also three (3) undated two-view information sheets with drawings (side and an isometric) of the Nieuport 17C.1 Scout, the S.E.5 and 5a, and the Fokker DR.1 Triplane.