Masonry Magazine September 1964 Page. 6
From Pittsburgh Corning: bright new walls of glass
Ingredients:
Combination of PC 4" x 12" unit and regular eight-inch unit. A clean, airy appearance; low maintenance.
Ingredients:
Six-inch PC color and clear units, artfully combined with sections of ordinary 8" x 8" flue tile. Glass and color in a load-bearing wall.
MASONRY
September, 1964