Letter (Captain Future, Spring 1940): First Issue a Thriller
| First published | April 1940 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1940 |
|
Captain Future, Spring 1940 | Better Publications, Inc. | MAGAZINE | 10 |
| July 2009 |
|
The Collected Captain Future: Wizard of Science, Volume One | Haffner Press | Omnibus | 152|152.3 |
| August 2016 |
|
Captain Future, Spring 1940 | Adventure House | Anthology | 10 |