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Educational Film Magazine is the only independent high-class (not high-brow) magazine covering all non-theatrical uses of the motion picture. IVot a house organ, no axe to grind, plays no favorites, give- a square deal to all. Only articles of news or magazine value published. No questionable or inharmonious adverti.^in;r accepted. One subscription and advertising rate to ever>- body. Mail your dollar now for a year's subscription to 120'i Aeolian Hall. New York Citv. 10,000 Copies Solil If'ilhin the Last Tuelve Monlhs Elementary Text Book ON Motion Picture Projection BY JAMES R. CAMEUO> The Text Book used by The American Red Cross, Knights of Columbus, Community Motion Picture Bureau and Y. M. C. A. Written in plain, everyday, understandable language, and the only Text Book published covering Motion Picture projec- tion in question and answer form. 82.00 PRICE S2.00 Just Off the Press Pocket Reference Book FOR Managers and Projectionists BY JAMES R. CAMERON Contains a number of electrical, mechanical and optical tables, diagrams and data, together with a directory of fllm producers and exchanges, etc., and a lot of general informa- tion regarding the handling and care of the Motion Picture Projector and accessories. 81.00 PRICE $1.00 THEATRE SUPPLY COMPANY 126 West 45th Street, New York City ./^V 0 ^. -- 7V^ Vibration III the i DeVry! rlU can balance a De Vry on a tea cup and it produces motion pictures as if shot from a stone wall. You can put the De Vry on a table, a chair—on any non-rocking object with four legs or none, and it does perfect work. It's in a class by itself in this, as in all other respects. See it and know for yourself. The De Vry stays in its case while at work. It is simple in construction—perfect in workman- ship. Weighs 20 pounds. Y'ou can carry it any- where. Has its own motor. Attach the plug to any lamp socket, press a button, and a picture up to 12 feet square is projected and up to 80 feet distant. If you are an amateur you will be immediately at home with a De Vry. Y'ou can quickly make motion-pictures of professional quality. ^ rite for new booklet. Abo let u« delIIorl^t^ale the DeVr> in yonr iiome or your office. If vou write iia, it will promptly bring our represeolative fnini one of 60 cities— tile one nearest >ou. and then you will sec whv tile De^ rv has beconie T^tandar.l. \de/ The De Vry Corporation \ / 1230 Marianna Street, Chicago V .New York Office: 111 West 42nd Street a Power's Cameragraph The M.\chine of Quality // All That Experience Skilled \\bRKMEN and Finest Materials Can put into a PRcxmcroE TN competitive test by the * Board of Education, New^ark, Nev/ Jersey, fifteen of the eigh- teen professional projectors pur- chased w^ere Power's Cameragraphs This test w^as of a most exacting nature and again demonstrated the superiority of the Power's Cameragraph wheie the highest type of professional projection is desired. NICHOLAS POWER COMPANY NINETY GOLD ST. I NCORPORATED KDVl AKD EARLE, President NEW YORK, N. Y. ■.i2