Glass, paints, varnishes and brushes: their history, manufacture, and use (1923)
Pittsburgh Plate Glass Company · Pittsburgh Plate Glass Company · leaf 170
LEADED GLASS … E._;:.::.^-^..Xa£;:.:..^ -,■ -. XjiT Leaded Beveled Plate This type of art glass usually is glazed in hard metal, copper plated, instead of in lead. [151]