Notes
First published under the title The Alien Thread in Munsey's Magazine [v8 #3, December 1892]. As 'Citizen 504' first published in The Argosy [v23 #3, December 1896]
Publications (6)
| Date | Publication | Publisher | Type | Page |
|---|---|---|---|---|
| December 1896 | The Argosy, December 1896 | The Frank A. Munsey Company | MAGAZINE | 443 |
| 1968 | Science Fiction by Gaslight: A History of Science Fiction in Popular Magazines, 1891—1911 | World Publishing Co. | Anthology | 353 |
| 1969 | Science Fiction by Gaslight: A History of Science Fiction in Popular Magazines, 1891—1911 | World Publishing Co. | Anthology | 353 |
| 1974 | Science Fiction by Gaslight: A History and Anthology of Science Fiction in Popular Magazines, 1891-1911 | Hyperion Press | Anthology | 353 |
| June 1974 | Science Fiction by Gaslight: A History and Anthology of Science Fiction in the Popular Magazines, 1891-1911 | Hyperion Press | Anthology | 353 |
| March 2010 | The Space Annihilator: Early Science Fiction from The Argosy, 1896-1910 | Black Dog Books | Anthology | 8 |