Frank Cunningham earned doctorates in Letters, Education, and Philosophy and received honorary doctorates in Humanities, Journalism, Law, and Literature for his achievements as a writer and journalist. Among his books are Big Dan: The Story of a Colorful Railroader and Sky Master: The Story of Donald Douglas.Brad Agnew, Professor of History at Northeastern State University, Tahlequah, Oklahoma, is the author of Fort Gibson: Terminal on the Trail of Tears (University of Oklahoma Press).