Placement
- contained in Explorers: SF Adventures to Far Horizonsanthology
- contained in Exploring the Horizons: Explorers, and the Furthest Horizonomnibus
- contained in Spectrum IVanthology
- contained in The 11th Science Fiction Megapackanthology
- contained in The 9th Annual of the Year's Best SFanthology
- contained in The Eighth Galaxy Readeranthology
- contained in The Great SF Stories #25 (1963)anthology
- contained in The Mammoth Book of 20th Century Science Fiction: Volume Oneanthology