A list of the biographies that went into the [Abridged] Presidential Histories is below:
1. Washington, A Life - Ron Chernow
2. John Adams - David McCullough
3. Thomas Jefferson, The Art of Power - Jon Meacham
4. James Madison - Richard Brookhiser
5. The Last Founding Father, James Monroe and A Nation’s Call to Greatness - Harlow G Unger
6. John Quincy Adams - Harlow G Unger
7. The Life of Andrew Jackson - Robert V. Remin
8. Martin Van Buren and the American Political System - Donald B. Cole
9. William Henry Harrison – Gail Collins
10. John Tyler – Gary May
11. Polk: The Man Who Transformed the Presidency and America – Walter R. Borneman
12. Zachary Taylor – John D. Eisenhower
I also use The president's fact book, by Roger Matuz, as a quick reference tool when finalizing my scripts.
Lastly, shout out to the totally unaffiliated https://bestpresidentialbios.com/curriculum/ for being a great resource on great presidential biographies.