Placement
- contained in Invasionsanthology
- contained in Masters' Choiceanthology
- contained in Tales from the Spaceport Baranthology
- contained in The Best of Kuttner 1collection
- contained in The Golden Years of Science Fiction: Fifth Seriesanthology
- contained in The Great Science Fiction Stories Volume 10, 1948anthology
- contained in The Shape of Thingsanthology
- contained in Two-Handed Enginecollection