Texas Parks and Wildlife has published a great PDF of the 9 CCC sites to see in 2016.
You do have to enter an email address, but you can easily unsubscribe from their distribution list at a later time. The PDF is worth it.
I have visited several of the parks on the list and agree that the drive is more than worth it to see the amazing buildings built by the CCC at these parks.
Spoiler: The Indian Lodge at Davis Mountains State Park is on the list and can only be truly appreciated in person. Plus you can swing by Balmorhea State Park on the way in or out (why not both?).