Team of Rivals was FASCINATING!!
True story: I hired Doris Kearns Goodwin to write an essay jointly with her constitutional scholar husband about the 5th amendment. She did a fabulous job.
She was under contract at the time to write Team of Rivals so the CEO of Simon and Schuster called me and threatened to sue. He demanded I come to his office, where he sat on a chair that was pretty high up and put me on a couch pretty far down and read me the riot act. He said Doris was way late with her book.
Of course, Doris never told us about the book, but when we told her our experience with Simon & Schuster, she said "Oh, I just needed a break from the book." She had been working on it for 8 years, if memory serves, and her previous book — of FDR — had won a Pulitzer Prize. I hope I'm remembering this right.
She said she had done tons of research for the book but still couldn't think of the angle that would make it different from other Lincoln biographies. She finally did and it was worth the wait.