Cover art: Ed Emshwiller · Ace Books, August 1957 · Image: James White Information (original site)
- Omnibus
- First published 1957
In omnibus editions
| Edition | Publisher | Date | Format | |
|---|---|---|---|---|
|
The Secret Visitors, Ace, 1957 | Ace Books | August 1957 | Paperback |
References
Data sources
ISFDB title record (CC BY 4.0).