Illinois Society of Architects · Chicago · leaf 25
19 U. S. GYPSUM PRODUCTS … Pyrobar Gypsum Tile For fireproof par-titions, steel pro-tection, elevatorenclosures, wall fur-ring, etc. Approvedby National Boardof fire Underwriters. Has fourteen pointsof superiority overother materials nowin use for similarconstruction. The facts are inter-esting and worthy of your most…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
