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In page Doc Savage:

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Another screenplay was written by Philip José Farmer based on the January 1936 pulp novel Murder Mirage.[1] It included a potential Wold Newton Universe cross-over involving a meeting between Doc Savage and a retired Sherlock Holmes in 1936. In any case, this screenplay was never filmed.[2][3] In 1966, the basic premise of Doc Savage's origin was an obvious influence on the Mexican lucha libre film character Mil Mascaras (1966), which was released at the height of the popularity of the Doc Savage paperback book series in the U.S.[citation needed]