Directed by
| Spencer Gordon Bennet | ... | (as Spencer Bennet) |
| Fred C. Brannon | ||
Writing Credits
| Royal K. Cole | ... | (original screenplay) (as Royal Cole) and |
| Albert DeMond | ... | (original screenplay) and |
| Basil Dickey | ... | (original screenplay) and |
| Lynn Perkins | ... | (original screenplay) and |
| Joseph F. Poland | ... | (original screenplay) and |
| Barney A. Sarecky | ... | (original screenplay) (as Barney Sarecky) |
Cast (in credits order) complete, awaiting verification
| Dennis Moore | ... | Craig Foster (archive footage) | |
| Linda Stirling | ... | Sheila Layton (archive footage) | |
| Roy Barcroft | ... | The Purple Monster (archive footage) | |
| James Craven | ... | Dr. Cyrus Layton (archive footage) | |
| Bud Geary | ... | Hodge Garrett (archive footage) | |
 |
Mary Moore | ... | Marcia (archive footage) |
| John Davidson | ... | The Emperor of Mars (archive footage) | |
|
|
Joe Whitehead | ... | Carl Stewart (archive footage) |
| Emmett Vogan | ... | Saunders (archive footage) | |
| George M. Carleton | ... | Paul Meredith (archive footage) (as George Carleton) | |
| Kenne Duncan | ... | Charles Mitchell (archive footage) | |
|
|
Rosemonde James | ... | Helen (archive footage) |
| Monte Hale | ... | Harvey (archive footage) | |
| Wheaton Chambers | ... | Prof. Benjamin (archive footage) | |
|
|
Fred Howard | ... | Prof. Crandall (archive footage) (as Frederic Howard) |
| Anthony Warde | ... | Tony (archive footage) | |
| Ken Terrell | ... | Andy Martin (archive footage) | |
| Rest of cast listed alphabetically: | |||
|
|
Robert Blair | ... | Evans (archive footage) (uncredited) |
| George Chesebro | ... | Shaw (archive footage) (uncredited) | |
| John Daheim | ... | Barnes (archive footage) (uncredited) | |
| Fred Graham | ... | Baker / Curry / Logan / Ed Fletcher (archive footage) (uncredited) | |
| Carey Loftin | ... | Mack (uncredited) | |
| Cliff Lyons | ... | Clay (archive footage) (uncredited) | |
| Tom Steele | ... | Fritz Benham (archive footage) (uncredited) | |
| Dale Van Sickel | ... | Policeman (archive footage) (uncredited) | |
| Henry Wills | ... | Mason (archive footage) (uncredited) | |
Produced by
| Ronald Davidson | ... | associate producer |
Cinematography by
| Bud Thackery | ||
Editing by
| Cliff Bell Sr. | ... | (as Cliff Bell) |
| Harold Minter | ||
Art Direction by
| Fred A. Ritter | ||
Set Decoration by
| Jasper Cline | ||
| John McCarthy Jr. | ||
Makeup Department
| Bob Mark | ... | makeup supervisor |
| Peggy Gray | ... | hair stylist (uncredited) |
Production Management
| Roy Wade | ... | unit manager |
Sound Department
| Ed Borschell | ... | sound |
Special Effects by
| Howard Lydecker | ... | special effects |
| Theodore Lydecker | ... | special effects |
Editorial Department
| Murray Seldeen | ... | supervising editor (uncredited) |
Music Department
| Richard Cherwin | ... | musical director |
| Charles Maxwell | ... | composer: stock music (uncredited) |
| Milton Rosen | ... | composer: stock music (uncredited) |
| Marlin Skiles | ... | composer: stock music (uncredited) |
