| #2 |  Mountains Beyond Mountains
| 3.93 | 56 reads | |
| #3 |  The Last American Man
| 4 | 11 reads | |
| #4 |  Cleopatra: A Life
| 3.58 | 48 reads | |
| #5 |  The Wives of Henry VIII
| 4.25 | 5 reads | |
| #6 |  Bretz's Flood: The Remarkable Story of a Rebel Geologist and the World's Greatest Flood
| 3 | 1 read |