Buckey O'Neill Cabin - Credit: Wikimedia Commons
The Buckey O'Neill Cabin was built in 1890 by William "Buckey" O'Neill in what would become Grand Canyon National Park. O'Neill was, among many other things, a member of Theodore Roosevelt's Rough Riders, who had previously been an author, sheriff, and a judge in his native Arizona. He was killed in action in Cuba in 1898, but was instrumental in establishing what would eventually become the Grand Canyon Railroad and Grand Canyon National Park. Read more on Wikipedia
Source: en.wikipedia.org