Placement
- contained in Isaac Asimov's Marvels of Science Fictionanthology
- contained in Science Fiction Masterpiecesanthology
- contained in The Asimov Chronicles: Fifty Years of Isaac Asimovcollection
- contained in The Asimov Chronicles: Fifty Years of Isaac Asimov!: Volume Sixcollection
- contained in The Asimov Chronicles: Fifty Years of Isaac Asimov: Volume Twocollection
- contained in The Winds of Change and Other Storiescollection