Water tower at the station.

The park manager at Rusk State Park used to work on the railroad part of the parks.  He told me that, with stiffer steam engine regulations from a few years back, that they now only have one steam engine that can be used. 
During the summer, the trains run much more often than they do in the winter.  When we were there, they were running one train on Saturdays (we left on Friday).

Photographs in Texas State Railroad Historical Park and Rusk State Park