Will Rogers, Bryan B. Sterling, Frances N. Sterling (1993). “Will Rogers' World: America's Foremost Political Humorist Comments on the Twenties and Thirties--and Eighties and Nineties”, p.14, Rowman & Littlefield
"Understanding writers, down to the letter / How do authors think? Interviews get behind the words to the creative process" by Steve Weinberg, www.sfgate.com. September 11, 2005.