The book is called "Behind Closed Doors: In the Room with Reagan & Nixon." It's the title of a memoir by a man who worked closely with both. Ken Khachigian, the author, was a speechwriter and a confidant to former Presidents Nixon and Reagan back in the 1960s, 70s and 80s. Near the end of his book, Khachigian, a lawyer based in California, writes: "I spent a decade and a half in close, confidential contact with these two Presidents." In 1990, when Presidents Reagan and Nixon were together, chatting about history, Khachigian kept notes of their conversation, which he reveals in his memoir.

Learn more about your ad choices. Visit megaphone.fm/adchoices