I was looking at the latest issue of Texas Highways, the travel magazine of the Texas Department of Transportation. They had a brief article about the Bryan Museum of Galveston having a S&W Ladysmith .22 carried by Allie Townsend, the first female Texas Ranger. A few things lead me to believe that she was more an "honorary" Ranger, but whatever.
Anyway, here is the museum's discussion plus another picture of the Ladysmith and gunbelt.
F00267 - Revolver