View of the Traders Mine in Iron Mountain, Michigan. Printed on front: "Traders Mine, Iron Mountain, Mich." Printed on back: "About 3,000,000 tons of ore have been mined from this property to date. This mine is known to contain large quantities of special Bessemer ores used to produce the finest grades of steel, such as armor plate, tool steel, etc. Natural color postcard made in U.S.A. by E.C. Kropp Co., Milwaukee, Wis. (HDF)."
