Biographical sketch of O.T. Tyler, "Father of Coryell County," from History of Coryell County. Mentions the [Crockett] King headright, which was near the Tyler headright in Coryell County.
HeritageQuest Online .
Biographical sketch of George W. Tyler, p. 390. Relatives: George W. Tyler - son; Orville Thomas Tyler - father.
The Texas Senate: Volume II, Civil War to the Eve of Reform, 1861-1889 1999.