Copyright credit for this story at its end on page 65 of March 1953 Science-Fiction Plus is: (Note. This story was first printed in Hugo Gernsback's annual Christmas booklet: "QUIP", December, 1949. Copyright 1949, by H. Gernsback.)
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| March 1953 |
|
Science-Fiction Plus, March 1953 | Gernsback Publications, Inc. | MAGAZINE | 4 |
| August 1954 |
|
Más Allá, Agusto 1954 | Editorial Abril | MAGAZINE | 4 |