The Master Key
From Wikipedia, the free encyclopedia
The Master Key may refer to:
in writing:
- The Master Key (1901 book), a children's book by L. Frank Baum
- The Master Key, a 1914 personal development book by L. W. de Laurence
in film:
- The Master Key (1914 serial), by Universal Studios
- The Master Key (1945 serial), by Universal Studios
See also:
- Master key (disambiguation)
- The Master Key System, a personal development book by Charles F. Haanel
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