First published in serial form in the May through August, 1915 issues of "McClure's Magazine".
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| May 1915 | McClure's Magazine, May 1915 | The McClure Publications, Inc. | MAGAZINE | 9 | |
| June 1915 | McClure's Magazine, June 1915 | The McClure Publications, Inc. | MAGAZINE | 35 | |
| July 1915 | McClure's Magazine, July 1915 | The McClure Publications, Inc. | MAGAZINE | 30 | |
| August 1915 | McClure's Magazine, August 1915 | The McClure Publications, Inc. | MAGAZINE | 35 | |
| October 1915 | McClure's Magazine, October 1915 | The McClure Publications, Inc. | MAGAZINE | 11 | |
| November 1915 | McClure's Magazine, November 1915 | The McClure Publications, Inc. | MAGAZINE | 10 | |
| December 1915 | McClure's Magazine, December 1915 | The McClure Publications, Inc. | MAGAZINE | 20 | |
| 1916 |
|
The Conquest of America: A Romance of Disaster and Victory: U.S.A., 1921 A.D. : Based on Extracts from the Diary of James E. Langston, War Correspondent of the 'London Times' | George H. Doran | Novel | |
| January 1916 | McClure's Magazine, January 1916 | The McClure Publications, Inc. | MAGAZINE | 22 | |
| February 1916 | McClure's Magazine, February 1916 | The McClure Publications, Inc. | MAGAZINE | 18 | |
| 1985 | Early Science Fiction Novels: A Microfiche Collection | Greenwood Press | Omnibus | 066 | |
| August 2005 | The Conquest of America | Project Gutenberg | Novel | ||
| December 2018 |
|
Sci-Fi Ultimate Collection | Musaicum Books / OK Publishing | Omnibus | |82 |
| December 2018 |
|
Sci-Fi Boxed Set: 160+ Space Adventures, Lost Worlds, Dystopian Novels & Apocalyptic Tales | Musaicum Books | Omnibus | |82 |