| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 2003 |
|
What Ifs? of American History: Eminent Historians Imagine What Might Have Been | G. P. Putnam's Sons | Nonfiction | |
| September 2004 |
|
What Ifs? of American History | Berkley Books | Nonfiction | xiii |
| June 2006 |
|
The Collected What If? Eminent Historians Imagine What Might Have Been | G. P. Putnam's Sons | Nonfiction |