Placement
- contained in A Multitude of Worldscollection
- contained in Deep Space: Eight Stories of Science Fictionanthology
- contained in Needle in a Timestackcollection
- contained in Needle in a Timestack and Other Storiescollection
- contained in Ringing the Changescollection
- contained in The Best of Robert Silverbergcollection
- contained in The Cube Root of Uncertaintycollection
- contained in To the Dark Star: 1962-69collection
- contained in Voyagers: Twelve Journeys Through Space and Timecollection