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September, 193 5 Page 199 "The Moors, trained in •warfare in Northern Africa, not only repulsed invaders, but themselves invaded southern .Europe." Historical films aid teaching technique f^ ONE are the days when young minds found history ^^ hard to appreciate. Today, with the help of dramatic, historical motion pictures, the past comes to life. Great events now can become living dramas, re-enacted in authentic settings, with proper costumes. Or, the places that have seen history in the making may be visited via motion pictures. Thus history springs to life at the vivify- ing touch of modern methods. When considering the use of educational motion pictures, it will pay you to investigate the RCA I6mm. Sound-on- Film projector. It gives great brilliance and clarity to pic- ture and sound, though portable and extremely simple to operate. Through it, you may project either sound or silent pictures, and accompany the latter, if you wish, by your own comments spoken into a microphone. The en- tire equipment is operated from the light socket and is easily carried from room to room. It is a compact, highly simplified adaptation of the RCA Photophone repro- ducing apparatus used in thousands of leading theatres. Back of it stands the RCA background — the world's richest experience in sound recording and reproduction. RCA l6mm. Sound-on-Film Projector as simple to operate as silent film projector! It is a highly simplified adaptation of the RCA Photo- phone equipment used in the country's finest theatres. Sound and picture are on the same film—keeps synchro- nization automatically perfect. Projects both sound and silent film Can be set up in a few minutes—no class- room disturbance. Costs no more to operate than silent projector! Microphone can be at- tached to give sound to silent movies by carrying operator's voice to the screen. ONE! TWO! THREE! GO! Threading the RCA l6mm.Sound-on-Film Projector is so simple; just three quick motions do it. No danger of tearing the film. Takes only a few seconds. RCA 16mm. SOUND-ON-FILM PROJECTOR VISUAL SOUND PRODUCTS DIVISION RCA MANUFACTURING CO., INC. CAMDEN, NEW JERSEY