| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| June 2007 |
|
The Collected Letters of Robert E. Howard Volume One: 1923-1929 | The Robert E. Howard Foundation Press | Nonfiction | 284 |
| September 2007 |
|
The Last of the Trunk Och Brev I Urval | Paradox Entertainment | Collection | 330 |
| October 2021 |
|
The Collected Letters of Robert E. Howard Volume One: 1923-1929 | The Robert E. Howard Foundation Press | Nonfiction | 288 |