Synopsis
Explorers on the Moon find a place where vapour has been leaking into space for years, creating a light effect that one of them finds oddly familiar. Then they find some surprising marks in the lunar soil.
Publications (15)
| Date | Publication | Publisher | Type | Page |
|---|---|---|---|---|
| March 1957 | Galaxy Science Fiction, March 1957 | Galaxy Publishing Corporation | MAGAZINE | 104 |
| July 1959 | Galaxy, No. 74 | Strato Publications | MAGAZINE | 183 |
| May 1960 | 13 Great Stories of Science Fiction | Fawcett Gold Medal | Anthology | 22 |
| September 1962 | 13 Great Stories of Science Fiction | Fawcett Gold Medal | Anthology | 22 |
| 1964 | 13 Great Stories of Science Fiction | Gold Medal Books | Anthology | 22 |
| 1966 | Science Fiction Through the Ages 2 | Panther | Anthology | 154 |
| 1967 | 13 Great Stories of Science Fiction | Coronet | Anthology | 22 |
| December 1969 | 13 Great Stories of Science Fiction | Fawcett Gold Medal | Anthology | 22 |
| 1972 | 13 Great Stories of Science Fiction | Coronet | Anthology | 22 |
| 1972 | 13 Great Stories of Science Fiction | White Lion | Anthology | 22 |
| 1973 | 13 Great Stories of Science Fiction | Coronet Books | Anthology | 22 |
| July 1979 | 13 Great Stories of Science Fiction | Fawcett Gold Medal | Anthology | 22 |
| November 1984 | Past Times | Tor | Collection | 164 |
| January 1987 | Past Times | Sphere Books | Collection | 119 |
| January 1987 | Past Times | Sphere | Collection | 119 |