Collector. Stories (n.d.) written by Matie Mowbray Thomas regarding the exploits of Deputy U.S. Marshal Heck Thomas; a transcription of a letter written by Isaac Parker recommending Thomas’s appointment as marshal of U.S. courts for Oklahoma; correspondence (1876–1960) regarding Heck Thomas, including a letter to Thomas from U.S. Senator Tom P. Gore, a letter to Bill Doolin from his wife, Edith, and a letter to Matie Thomas from Chris Madsen; magazine articles (1935) recounting the exploits of Heck Thomas as a railroad express messenger in Texas and as U.S. deputy marshal in Indian Territory; and diaries (1889–1895) kept by Heck Thomas that include notations about cases, witnesses, etc.