Thanks to DallasFanzine.com's Garry for passing along the info, as well as the photo below. You can see many more photos from the exhibit at his site (click on "Gallery" from the home page). Garry reports that Steve Kanaly has already been at the exhibit, and Susan Howard will pop in, too. Producer/director Dwight Adair will be part of a discussion there in July.
You can read more about the exhibit, as well as see an event schedule, at the museum's site.
It also came up on Austin's KLBJ.
Photo: Bob Bullock Texas State History Museum