Placement
- contained in Audiobook Collectionomnibus
- contained in Beyond the Safe Zonecollection
- contained in Capricorn Gamescollection
- contained in Phases of the Mooncollection
- contained in The Arbor House Treasury of Science Fiction Masterpiecesanthology
- contained in The Best of Robert Silverberg: Stories of Six Decadescollection
- contained in The Best of Robert Silverberg, Volume Twocollection
- contained in Trips: 1972-73collection