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If Eastman Film was not as good as it is, Kodak Park, where it is manu- factured, would not be as larije as it is—and Kodak Park is the largest photo- graphic manufacturing plant in the world. EASTMAN KODAK COiMPANY ROCHESTER, N. Y. LIMITED QUANTITY OF BACK NUMBERS OF EDUCATIONAL FILM MAGAZINE FOR SALE October 1919, 25 cents November 1919, 25 cents December 1919, 25 cents January 1920, 15 cents February 1920, 15 cents March 1920, 15 cents April 1920, 15 cents May 1920, 15 cents June 1920, 15 cents TOTAL $1.65 12 N/lonths" Subscription $1.00 Your order filled promptly on receipt of check, money order, or registered letter. Magazines mailed you postage paid. SUBSCRIPTION DEPARTMENT EDUCATIONAL FILM MAGAZINE 1815 Aeolian Hall, New York City A Valuable Assistant to the Educator The Graphoscope Portinanto i This machine stands out among portable | machines on account of its combination of | simiDlicity and durability. It can be car ried wherever man can go. Nothing which is mechanically essential has been left out of it. Guaranteed to stand hard knocksj Uses standard film. Electric motor drive. Incan- descent lamp. FEATURES Interniiltent, of Geneva type. Large diameter, three blade shutter outside. High grade, large diameter, projecting lens. Aluminum castings, bearings bushed in bronze. Eliminates twist in the film near the aperture plate. Ground tool steel shafts. Mechanism enclosed, fire roll- ers at entrance and exit of film from magazine. Standard. 1,000 foot reel, 10-■ inch diameter. Both reels in lower compartment. Take-up, double cone type, simplest in use today. Carrying case of Bakelite, fire- proof and dampproof. I I Let us Send You Literature G6 on this Machine THE Graphoscope Company 50 EAST 42nd STREET NEW YORK 30