Original paint trade vintage catalog for PITTSBURGH PLATE GLASS COMPANY, was located in Pittsburgh, PA. Paint Right with Color Dynamics. Scientific color planning with Color Dynamics is choice of a basic color plan. There are four standard plans in which the full strength, tints, shades, of grayed versions be used as well as Black, White or Gray. Complimentary Harmony - two opposite colors on the color circle. Split Complimentary Harmony - any color on the circle with colors on either side of its opposite. Triad Harmony - any three colors equally distant on the circle. Analogous Harmony - a series of neighboring colors on the circle which contain one color in common. For example: Yellow Orange, Yellow, and Yellow Green all contain yellow. Many color harmony examples are illustrated and described for many different rooms. Unbound from a large 1951 engineering catalog, this unique old twenty-four page technical specifications brochure would display beautifully matted and framed. Nice cover graphics. A fantastic addition to your retro paint and coatings library. Pages are detached and contain a small amount of residual glue on edge.