found this on amazon rating site for 13th Floor Elevators.. may give u a new lead...I would think the band would still have some photos perhaps...
Going Up, Aug 16 2003
Reviewer:L. Graham (Houston<Tx) - See all my reviews
Having grown up in Houston, Texas I was fortunate enough to have seen and known The Elevators. When I knew them they were living off of Old Galveston Rd in the Old Milby mansion. I can still remember Stacy peering out he window from up stairs everytime we went over to score acid. Danny Thomas, the drummer who came along before and during Bull of the Woods married my next door neighbor Linda Cypert. What good days they were watching them perform at the Love Street Light Circus. What a thrill it was to see Rocky again when he reunited with what was left of the band in the mid 80's at the Cellar in Houston. Easter Everywhere a must for any phycedelic era fiend or listener of ZZ Top, who do you think were their heros? The Elevators of course.
I remember going by a lot of times on the way to Milby Park for the weekly concerts, and later I lived on the corner of Park Place and Old Galvston Rd. I remember the tree lined drive, whick stood i contrast to the rather nakedness of the rest of the property. I do remember it was large, red brick, with pillars, but stood so far off Old Galveston Rd it was difficult making out details.
Good Luck..mick