| Pencils: | E. C. Stoner (signed) |
| Inks: | E. C. Stoner (signed) |
| Colors: | ? |
| Letters: | typeset |
Phantasmo's costume is mis-colored as flesh-color on the cover, making it appear that he is nude.
Entire contents copyright, 1939 by NEA Service, Inc.; 1940 by R. S. Callender; 1940 by Edgar Rice Burroughs, Inc.; 1940 by Phillips H. Lord, Inc.; 1940 by Dell Publishing Co.
The on-sale date is from the publication date recorded in the Catalog of Copyright Entries, Part 2, Periodicals, 1940, New Series, Vol. 35, No. 4.
| Script: | ? |
| Pencils: | E. C. Stoner (signed) |
| Inks: | E. C. Stoner (signed) |
| Colors: | ? |
| Letters: | ? |

Copr., 1940, by R. S. Callender
Part of a continuing story.
Copr., 1940 by R. S. Callender

Signed "EAP" in next-to-last panel.
Copr. 1940 by Phillips H. Lord Inc.
| Script: | ? |
| Pencils: | Al McWilliams (signed asA. McWilliams ) |
| Inks: | Al McWilliams (signed asA. McWilliams ) |
| Colors: | ? |
| Letters: | ? |

Copr 1940 by R S Callender
| Script: | Victor Bloom (credited asVic Bloom) |
| Pencils: | Bob Hebberd (signed asHebb) |
| Inks: | Bob Hebberd (signed asHebb) |
| Colors: | ? |
| Letters: | ? |
Copr., 1940, by Dell Publishing Co.
Signed "Hebb" in a circle in fifth panel on last page.
Art credits suggested by Who's Who in American Comic Books 1928-1999.
| Script: | ? |
| Pencils: | Bob Jenney (signed asR. L. J.) |
| Inks: | Bob Jenney (signed asR. L. J.) |
| Colors: | ? |
| Letters: | ? |

Copr. 1940 by R. S. Callender
Initialed "R. L. J." on bottom of next-to-last page.
| Script: | |
| Pencils: | John Coleman Burroughs (credited) (drawn by) |
| Inks: | John Coleman Burroughs (credited) (drawn by) |
| Colors: | ? |
| Letters: | ? |
Copr., 1940 by Edgar Rice Burroughs Inc.
| Script: | Roy Crane (credited, signed) |
| Pencils: | Roy Crane (credited, signed) |
| Inks: | Roy Crane (credited, signed) |
| Colors: | ? |
| Letters: | ? |
Dialogue is re-lettered. First part of a continued story.
Copr. by NEA Service, Inc.
