Placement
- contained in Astounding Tales of Space and Timeanthology
- contained in Major Ingredientscollection
- contained in Short Stories Collectioncollection
- contained in The Astounding Science Fiction Anthologyanthology
- contained in The Best of Eric Frank Russellcollection
- contained in The Golden Years of Science Fiction: Fifth Seriesanthology
- contained in The Great Science Fiction Stories Volume 10, 1948anthology
- contained in The Second Astounding Science Fiction Anthologyanthology
- contained in War and Peace (Anthology #6)anthology