Notes
First published in February 1951 issue of "Man's World" (Ray Lovell-F&SF Website bibliography).
Publications (7)
| Date | Publication | Publisher | Type | Page |
|---|---|---|---|---|
| February 1951 | Man's World, February 1951 | Lock Publishing Corp. | MAGAZINE | 10 |
| December 1951 | The Magazine of Fantasy and Science Fiction, December 1951 | Fantasy House, Inc. | MAGAZINE | 45 |
| August 1952 | The Best Science-Fiction Stories: 1952 | Frederick Fell | Anthology | 225 |
| 1953 | The Best Science Fiction Stories: Third Series | Grayson & Grayson | Anthology | 211 |
| August 1953 | American Science Fiction, #16 | Malian Press | MAGAZINE | 29 |
| May 1955 | Frontiers in Space: Selections from The Best Science Fiction Stories | Bantam Books | Anthology | 74 |
| 2010 | The Ruum and Other Science Fiction Stories | Richard Simms Publications | Collection | 41 |