7542 Cayton St. – Houston TX (architect: A. Carroll Brodnax)
From an advertisement for the 1956 Houston Parade of Homes brochure (thanks to GlenbrookValley.com):
Most revolutionary and yet practical innovation in the house is the living area. A multi-purpose area, it is one tremendous room which can actually accommodate 70 people – seated. Open shadow boxes, suspended from the sloping beamed ceilings found throughout the house float over serving or dining bar, brick-faced and consolweld topped for the ultimate beauty.