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This is a rare and comprehensive vintage catalog, Catalog R, from A.Y. McDonald Mfg. Co., specializing in plumbing and heating supplies. The catalog features a wide array of products including plumbing fixtures, heating equipment, brass goods for water, gas, oil & steam, automatic water systems, and various tools & accessories. It includes detailed illustrations, product descriptions, and information, reflecting the company\'s offerings and the technology of the mid-20th century. The book serves as a valuable historical reference for collectors of industrial catalogs, plumbing history, or those interested in early 20th-century manufacturing and regional commerce in the American Midwest. The catalog proudly states \"Serving the Middle West\" and lists multiple branch locations in the region. Copyright dates indicate production in 1947 and 1950.
