Copyright Registrations of Motion Pictures
Reading edition
January 1, 1940–December 31, 1949
Class L, Motion-picture photoplays 7,122
Class M, Motion pictures other than photoplays 11,645
Total 18,767
Class M contains many animated cartoons and newsreels as well as nontheatrical films. The letter P following the class symbol in an entry indicates that the film was registered as a published work; the letter U, an unpublished work.
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