One of over 700 Paramount Productions, filmed between 1929 and 1949, which were sold to MCA/Universal in 1958 for television distribution, and have been owned and controlled by Universal ever since.
The only shared credit of Buster Crabbe and Frank Shannon other than their respectively playing the characters of Flash Gordon and Dr. Zarkov in the three sci-fi adventure serials Flash Gordon (1936), Flash Gordon's Trip to Mars (1938) and Flash Gordon Conquers the Universe (1940).