Negatives may not have been taken by University of Waterloo staff.

File consists of four transparencies of air conditioners.

File consists of material relating to air conditioners and a point-of-purchase display stand for air conditioners. Includes fold-out brochures, leaflets, a warranty card, and photographs and transparencies of the stand and of air conditioners.

Photograph of men and women air force personnel marching outdoors on what is likely a military base under a cloud filled sky. A man in uniform is seen standing in salute at left.

File consists of two air photographs from the Air Photo Division, Energy, Mines & Resources, Canadian Government (two of copies each). Photographs are numbered A13472-204 and A13472-205; locations not identified. File also includes a map traced from one of the photographs.

File consists of two transparencies of the Electrohome electrostatic air cleaner and one transparency of mountain scenery.

File consists of material relating to the EF-3 electrostatic air cleaner and the Springaire electronic air cleaner. Includes four photographs (plus duplicates), two copy negatives, one transparency, one slide, and three copies of a single-sheet advertisement. Some of the photographs are composite images. File also includes a composite photograph of the AC2500 and AC3300 air conditioners.