Online death certificate: Theo Anderson (10 Feb 1856 - 17 May 1940) viewable/printable https://familysearch.org/
You'll need to setup a "free" user account for access. He had been in Merkel, Taylor County, TX only 10 days prior to death. His usual residence was in Carthage, Dallas County, AR. Document indicates he was buried in Merkel but there is no findagrave memorial. The informant was W. R. (Wade Robertson) Campbell of Hobbs, NM.