Letter (Captain Future, Winter 1941): World Progress
| First published | January 1941 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| January 1941 |
|
Captain Future, Winter 1941 | Better Publications, Inc. | MAGAZINE | 122 |
| December 2010 |
|
The Collected Captain Future: Man of Tomorrow, Volume Two | Haffner Press | Omnibus | 11 |
| June 2016 |
|
Captain Future, Winter 1941 | Adventure House | Anthology | 122 |