This is a 1964 2-page ad for a Koppers Unit Laminate Arches, Bitumastic Coating, Wolmanized Lumber, Dylite Packaging! The size of the ad is approximately 11x17inches. The caption for this ad is 'What kind of building can store a mountain of salt and never corrode?' The ad is in great condition. This vintage ad would look great framed and displayed! Add it to your collection today!