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Sources of Information, Materials and Equipment 217 VISUAL MATERIALS AND EQUIPMENT Maps, Charts, and Globes
Denoyer-Geppert Company, 5235 Ravenswood Ave., Chicago, 111. National Geographic Society, Sixteenth and M Sts., Washington, I). C. A. J. Nystrom & Co., 3333 Elston Ave., Chicago, 111. Weber Costello Company, Chicago Heights, 111.
Photographs and Prints
Art Extension Press, Inc., Westport, Conn.
Colonial Art Company, Oklahoma City, Okla.
George Washington Memorial Association, 386 Fourth Ave., New York City
National Geographic Society, Sixteenth and M Sts., Washington, D. C.
Perry Pictures Company, Box 4, Maiden, Mass.
Photographic History Service, P.O. Box 2401, Hollywood, Calif.
Photographic Section, U.S. Department of Interior, Washington, D.C.
Travel Information Bureau, Swedish State Railways, 551 Fifth Ave., New York
City Wild Flower Preservation Society, 3740 Oliver St., Washington, D. C. Yosemite Park and Curry Company, Yosemite National Park, Calif.
Opaque Projectors
Bausch & Lomb Optical Company, Rochester, N. Y. Spencer Lens Company, Buffalo, N. Y.
Stereographs and Stereoscopes
Keystone View Company, Meadville, Pa.
Standard Glass Slides
Bailey Art Slide Company, 21 Lake Ave., Newton Center, Mass.
Fairchild Aerial Surveys, Inc., 224 East 11th St., Los Angeles, Calif.
H. E. Floercky, 543 Muirfield Rd., Los Angeles, Calif.
Keystone View Company, Meadville, Pa.
Photographic History Service, P.O. Box 2401, Hollywood, Calif.
Photographic Section, Department of the Interior, Washington, D. C.
Sims Visual Music Company, Quincy, 111.
Society for Visual Education, Inc., 100 East Ohio St., Chicago, 111.
Victor Animatograph Company, Davenport, Iowa
Miniature (2" x 2") Glass Slides
Society for Visual Education, Inc., 100 East Ohio St., Chicago, 111.
Slide-Making Materials
(Etched glass, colored inks, colored pencils, cellophane, lumarith, slide mats, cover glasses, etc.)
Celluloid Corporation, 290 Ferry St., Newark, N. J. Eastman Kodak Company, Rochester, N. Y. Keystone View Company, Meadville, Pa.