The Witte Museum is in San Antonio TX, right next to Brackenridge Park. Much of it is oriented towards little kids (there were a couple of school groups there during my visit), but there is also a nice collection of artifacts from Texas history.
Here are some photos from an afternoon at the museum.
Inside the museum
Re-enactor giving a talk to a school tour
“Tejano Freighter” wagon cart
Colt Army pistol, an engraved presentation model
Spittoon, used to keep people from spitting tobacco juice on the floor
Bowie knife found on the San Jacinto battlefield
Portable jail cell, used to temporarily hold prisoners in western frontier towns
“Trail Drivers”, a sculpture by Gutzon Borglum. Some may recognize that name—he carved Mount Rushmore.
The best part of the Witte Museum is, alas, still under constructions—the dinosaur hall. Here you can see a mounted dino skeleton through the window.