Glass, paints, varnishes and brushes: their history, manufacture, and use (1923)
Pittsburgh Plate Glass Company · Pittsburgh Plate Glass Company · leaf 154
PRISM GLASS … Sidewalk Vault Lights Lighting the Basement Sidewalk slabs with glass in reinforced concrete panels are widely used for the lighting of dark basements and make it possible to utilize valuable space under sidewalks. Various forms of glass lenses are used for different conditions, either flat pressed…
