Placement
- contained in 100 Astounding Little Alien Storiesanthology
- contained in Arthur C. Clarke Audiobook Collectionomnibus
- contained in Portals of Tomorrow: The Best Tales of Science Fiction and Other Fantasyanthology
- contained in Tales from Planet Earthcollection
- contained in The Collected Stories of Arthur C. Clarkecollection
- contained in The Collected Stories: Volume Threecollection