| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| December 1939 |
|
Astounding Science Fiction, December 1939 | Street & Smith Publications, Inc. | MAGAZINE | 71 |
| May 1954 |
|
Science-Fiction Thinking Machines: Robots, Androids, Computers | Vanguard Press | Anthology | 222 |