The $7 million contemporary "residence for art" was with Lake|Flato, of San Antonio, 1998, according to the Morning News' Texas architecture firm Lake-Flato shows true grit, by Christopher Wynn, 8 June 2011. Read to the end if you're interested. There are many pictures online temporarily, as it's still for sale: look up "36 Ash Bluff"
The Big House, from the Thirties, is "23 Ash Bluff" now, also for sale. Some conspiracy theorists say it was where the president's death in Dallas was decided.
But I still don't know about the other one, pictured above.