Placement
- contained in A Century of Science Fictionanthology
- contained in A Century of Thrillers: Second Seriesanthology
- contained in Machines That Think: The Best Science Fiction Stories About Robots and Computersanthology
- contained in Murder Most Foulanthology
- contained in Robots & Artificial Intelligence Short Storiesanthology
- contained in Robots Through the Agesanthology
- contained in Short Science Fiction Collection 36anthology
- contained in Tales of Imagination and Suspenseanthology
- contained in The Pocket Book of Science-Fictionanthology
- contained in Thrillers: A Classic Collectionanthology
- contained in We, Robotsanthology