In 1953 the PGA released an instructional movie along with Life Magazine called "Keep Em On the Fairway".
The intro is by Bobby Jones and the explanation of the golf swing is as true today as it was then. I love the way it uses what was then state of the art technology to inhance the instructional portion.
The film features a nice mix of footage where the pros are seen both attending to the common faults of some everyday golfers and demonstrating their techniques on the course. Included in the film are the giants of the game at the time: Ben Hogan, Sam Snead, Lloyd Mangrum, Jerry Barber, Cary Middlecoff, Walter Burkemo, Ed Oliver, Jimmy Demaret, Lawson Little, Byron Nelson, Lew Worsham, Pat Abbott, Miss Louise Suggs, Bing Crosby and Bob Hope.