Pigmented structural glass started being produced in the early years of the twentieth century, reached its height in popularity during the 1930's, and was no longer produced by 1960s. Vitrolite was one of the most popular brands of pigmented structural glass, It was first used as a white glass background for decalcomania advertisements and as cladding in areas were sanitation was desired. Several types of applied decoration were developed for Vitrolite that helped to expand it's applications in building beyond sanitary applications. These types of decoration include painted, sand-blasted, inlaid, laminated, agate, and surface textured designs. Decorated Vitrolite was commonly used on store fronts, in signage, and for restaurant interiors and lobbies. All decorated Vitrolite was completed in the Vitrolite factory prior to shipping to customers. The processes of creating the various types of ornamentation, how they developed, and their applications are the focus of this thesis. / Department of Architecture