Theodore Roosevelt (1857-1919) was the most literary of American Presidents, writing scores of books, including Through the Brazilian Wilderness and African Game Trails. He was also the most active of American writers. In little more than six decades, Roosevelt was, among many of his activities, a rancher, historian, reformer, New York City Police Commissioner, renowned hunter, New York State Governor, conservationist, Vice President of the United States, and 26th President of the United States. What is less known is that Roosevelt was also one of the great epistolary writers, penning more...

From the early years of fur trading to today's Silicon Valley empires, America has proved to be an extraordinarily fertile land for the creation of enormous fortunes. Each generation has produced one or two phenomenally successful leaders, often in new industries that caught contemporaries by surprise, and each of these new fortunes reconfirmed the power of fanatically single-minded visionaries. John Jacob Astor and Cornelius Vanderbilt were the first American moguls; John D. Rockefeller, Andrew Carnegie, and J. P. Morgan were kingpins of the Gilded Age; David Sarnoff, Walt Disney, Ray Kroc,...