A quote from their website describes the Stanzel brothers:
This is the fascinating story of two Texas farm boys, Victor and Joseph Stanzel, natives of Schulenburg, Texas. These brothers pioneered and manufactured one of the most respected and diverse lines of model aircraft products, from the True Scale Ornamental Models to the Stanzel Flying Toys.
As pioneers of control line systems, they developed, patented and manufactured the historic 1939 Tiger Shark and the "G" Line Flying system that transformed the model airplane world. Victor Stanzel was known as "Mr. Monoline", and affectionate and coveted title. Recognizing their lifetime achievements, the Academy of Model Aeronautics inducted Joseph and Victor Stanzel into the Model Aviation Hall of Fame, the Highest possible honor in their field. Neither brother ever married. Both were devoted to their craft and their business.
Here's a link to their history: http://www.stanzelmuseum.org/history.html
We spent about an hour looking around, reading, and taking photos. We were the only people in any of the buildings. Too bad. It's a nice place to visit. These brothers were entrepreneurs and pioneers in their field and brought much joy to adults and children over the years.
It's about 2 miles off Interstate 10, 50 miles or so east of San Antonio.
Next stop: The Big Thicket !