Original heating trade vintage catalog for UNION IRON WORKS, home office was located in Erie, PA. Manufacturers of steam boilers. Water tube boiler, horizontal return tubular boilers. Drum, headers, tubes, hand holes, riveting and staying, baffles are all discussed. Unbound from a large 1916 industrial catalog, this unique old one page technical brochure would exhibit beautifully matted and framed. A fantastic addition to your retro industrial heating equipment collection. Page is detached and may contain a small amount of residual glue on edge.