- Warner Bros.
- (United States, 1952)(theatrical)
- Warner Bros.
- (United Kingdom, 1952)(theatrical)
- Warner Bros.
- (Sweden, 1953)(theatrical)
- Warner Bros.
- (West Germany, 1953)(theatrical)
- Warner Bros.
- (Norway, 1955)(theatrical)
- Committee on Un-American Activities, House of Representatives, Congress of the United States
- (the Committee on Un-American Activities, House of Representatives, Congress of the United States, the incidents in this motion picture are based on the files of - names and places have been changed)
- Committee on Un-American Activities, House of Representatives, Congress of the United States
- (the Committee on Un-American Activities, House of Representatives, Congress of the United States, we gratefully acknowledge the cooperation of this Committee)
- International Alliance of Theatrical Stage Employees (IATSE)
- (I.A.T.S.E., this picture made under the jurisdiction of: affiliated with A. F. of L.)
- RCA
- (sound system)
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