Marshall Sprague was an American Author and historian specializing in western American history, with particular interest in that of Colorado. Born in Newark, he graduated from Princeton University with a degree in English, became a newspaperman in China and Paris, and then contributed articles and book reviews to The New York Times. He settled in Colorado Springs in 1941 following a tuberculosis diagnosis, and it was following his second recovery that he set to work on writing his book about the history of Cripple Creek, published in 1953 as Money Mountain: The Story Of Cripple Creek Gold. Sprague continued to live and work in Colorado Springs until his death in September of 1994.