Woah! I found one of the first rodeos of Houston! I was browsing the newspaper The Houston Informer dated February 23, 1924 and came across a business ad for Cattlemen's Rodeo at the End of South Main Street.
This was before the Houston Fat Stock Show and Livestock Exposition in the 1930s. I believe.
Bassett Blakely & Frank Y. Dew
Present.
Under Personal Direction Tom L. Burnett.
The Most Thrilling, Sensational, and Grueling Contests o.f Cowboy Sports Ever Staged In Texas
The Cattlemen's Rodeo.
Special Arena Seating 10,000- End of South Main Street.
You could buy the tickets at downtown's Rice Hotel.
Cattlemen's Rodeo Headquarters - Second Floor Republic Building. Phone - Preston 3327.
From what I read, Tom L. Burnett was a wealthy rodeo businessman. A Hollywood Star.
The Houston Post dated February 25, 1924:
Others I found during the same time period.
Sakowitz Bros. ad.