The Last Days of LettermanOn May 20, 2015, Dave said, Thank you and goodnight. The Foo Fighters sang Everlong, and Late Show with David Letterman ended its run. The final six weeks of the series had guests like Julia Roberts, George Clooney, Oprah Winfrey, and the Obamas. All names you have heard many times. But it was the people behind the scenes who pulled off these twenty eight unforgettable episodes of late night television. Author Scott Ryan conducted over twenty