Original concrete trade vintage catalog for NORTHFIELD IRON COMPANY, was located at 300 Nico Street, Northfield, MN. Manufacturers of concrete batch mixers, gravel screeners and washers, sand and water heaters, galvanized steel mortar boxes & pails and adjustable cement measuring scoops. Disbound from a large 1916 engineering book, this unique old one page technical specification brochure would display beautifully matted and framed. Contains a small amount of residual glue on edge.