Original old vintage catalog MISSISSIPPI GLASS COMPANY of New York City, NY.  Misco Wire Window Polished.  Coolite heat absorbing glass, Factrolite for sidewall sash, Hylite for sawtooth roofs, Pentecor for skylights  Disbound from a large 1938 construction book, these unique four page technical data specification sheets would display wonderfully matted and framed. It would be a marvelous addition to your architecture and engineering library.