- Yanks in the RAF: The Story of Maverick Pilots and American Volunteers Who Joined Britain's Fight in WWII
- The Last Weeks of Abraham Lincoln: A Day-by-Day Account of His Personal, Political, and Military Challenges
- Decided on the Battlefield: Grant, Sherman, Lincoln and the Election of 1864
- Germany's Spies and Saboteurs: Infiltrating the Allies in World War II
- Founding the Far West: California, Oregon, and Nevada, 1840-1890
- William W. Turner
- William Berger
- Joseph Cantalupo
- Tom Wheeler
- Alfred Whital Stern Collection of Lincoln
- Warren Hinckle
- Marc Leepson
- William Marvel
- Ralph Louis Ketcham
- Neil Hanson
- John C. Stevens III
- Polly Pollock
- Gregg Jones
- Sam Portaro
- Scott Miller
- Mark L. Bradley
- Edward H. Bonekemper III
- Andre Kostelanetz
- Richard (ed) Kostelanetz
- Frederick William Winterbotham