Placement
- contained in Classic Science Fiction: The First Golden Ageanthology
- contained in Fury / Mutant / The Best of Henry Kuttneromnibus
- contained in Isaac Asimov Presents The Golden Years of Science Fiction: 2nd Seriesanthology
- contained in Men and Machinesanthology
- contained in Tales in Timeanthology
- contained in The Best of Henry Kuttnercollection
- contained in The Best of Kuttner 2collection
- contained in The Great Science Fiction Stories Volume 4, 1942anthology
- contained in Two-Handed Enginecollection