The brand looks like a Rafter T, T Rafter, or some other interpretation. Cattle brand books exist at the State level, and also sometimes in the Counties. Also private printings of area cattle brands are known. Since "Yuma" is on this buttstrap, that may be the area to search.
Attached here are a few pages from an 1897 area brand book, just to show what these look like. This brand book was paid for by numerous ads of commission agents, saddle makers etc. The area covered were parts of Texas, Oklahoma Territory, New Mexico, Kansas, and Colorado.