WRIGHT PRISMS - In 1895 Frank Lloyd Wright designed and patented a series of forty-five prisms of ribbed clear glass tiles for the Luxfer Prism Company. Typically installed in the upper registers of windows in both industrial and commercial spaces, these 4-inch square sheets of glass used refraction to illuminate deep spaces with natural light. Wright designed The Luxfer Prisms Once Building in Buffalo, New York, 1896-97, with the front and rear walls of the building made entirely of Luxfer Prisms. Wright’s many designs for Luxfer are distinguished by their geometric compositions made up of squares, circles, and ovals that are reminiscent of Friedrich Froebel’s educational gifts that Wright engaged with as a child.