Check out a video of Donald Trump in the studio recording his ‘Crippled America’ audiobook.

Walter Isaacson, bestselling author of 'Einstein: His Life and Universe,' discusses Albert Einstein's landmark theory of relativity.

Timothy H. Breen, historian and author of 'George Washington's Journey', discusses the first president's trip after the Revolution to visit each of the 13 states that comprised the new nation. That trip played a vital role in the forming of a strong new federal government and unifying the country.

Bestselling author David McCullough goes behind-the-scenes of audiobook Brave Companions'.

Douglas Waller, author of the critically acclaimed bestseller 'Wild Bill Donovan' and its companion book, 'Disciples', details the early careers of the OSS spymasters during World War II.