Original stone trade vintage catalog for AMERICAN BLACK GRANITE COMPANY. General offices and plant were located in Ashland, WI. Manufacturers of Rosetta. Formerly Mellen is an extremely hard brilliant granite composed of black and deep gray crystals closely packed together and characterized by an occasional fleck of mother of pearl. Pictured is a sample of Rosetta Black, First Grade. Unbound from a large 1931 architectural catalog, this unique old two page (front & back) technical brochure would display fantastic matted and framed. Nice graphics. A fabulous addition to your retro stone library. Pages are detached and contain a small amount of residual glue on edge.