| Title | Awards | ||
|---|---|---|---|
| Mr. Clemens and Mark Twain: A Biography |
| ||
| Walt Whitman: A Life |
|
| Title | Role | Award | Year | |
|---|---|---|---|---|
| Walt Whitman: A Life | Author | National Book Award for Nonfiction | 1981 | winner |
| Mr. Clemens and Mark Twain: A Biography | Author | National Book Award for Nonfiction | 1967 | winner |