Author Walter Noble Burns visited Earp in September 1926 and asked him questions with the intent to write a book about Earp. Earp declined because he was already collaborating with John Flood. Burns visited Tombstone and based on what he learned decided instead to focus his book on Doc Holliday. He pestered Earp for facts, and on March 27 the next year, Earp finally responded to Burns' repeated requests in an 11-page letter outlining the basic facts from Earp's point of view.