Placement
- contained in Far Outcollection
- contained in Far Out / In Deep / Off Centre / Turning Onomnibus
- contained in The Best of Damon Knightcollection
- contained in The Best Time Travel Stories of All Timeanthology
- contained in The Great SF Stories #16 (1954)anthology
- contained in The Mammoth Book of Science Fictionanthology
- contained in Timegatesanthology