Casita Travel Trailers is still manufacturing new trailers and can be located on the web at:
Casita's Toll Free Number
Casita Trailers has been building small travel trailers since 1983 and are located in Rice, TX.
They currently produce 16- and 17-foot Spirit, 16- and 17-foot Freedom, 16- and 17-foot Liberty, and 17-foot Independence travel trailers. Out of production is the 13' Patriot model. Casitas are fairly abundant on the resale market and factory parts are readily available by contacting Casita at the toll free number above.
Casita Trailers are molded fiberglass trailers using a one-piece upper and lower mold that is then joined at a horizontal center seam. The manufacturing process is very similar to Scamp Trailers and is what makes "molded fiberglass travel trailers" unique from other types of RV's and much less prone to leaks.