Masonry Magazine May 1966 Page. 18
Good profit idea for masons: PC glass block.
Install Intaglio as an intriguingly beautiful grill/wall. The feeling of openness without the usual maintenance problem or loss of space.
Install Intaglio as a weather wall. The partial vacuum, hermetically sealed into each all-glass unit, has an insulation value equivalent to a 12" masonry wall.
Install Intaglio as a dimensional wall. Pattern overpowers mortar joint. Bright and forceful in sunlight, gentle and subtle in silhouette.
Install Intaglio for a variety of visual appeals: i.e., fabric or light on the interior side produces striking color effects through the clear glass design.
This is Intaglio: an all-glass wall unit material that installs much the same as brick. So it's right up your alley. Four of the units have clear glass designs and masonry-like glass surfaces. Two others (standard size not shown) are plain masonry-textured. Sizes are 8" square x 4" or 4" x 8" x 4". Go well together. Imagine the extra money you could make with a material like this around. You could put in walls, grills, even windows made of it.
If you'd like to know more about making money with these blocks, write Pittsburgh Corning Corp., Dept. MA-56G, One Gateway Center, Pittsburgh, Pa. 15222.