Original industrial trade vintage catalog for CLYDE IRON WORKS, INC. was located in Duluth, MN. Manufacturers of derricks, logging machines and parts manufacturer. Guy, clam shell, barge, steel derricks, all-steel bull wheels, pile follower and driver hammer. Many tables and charts are provided. Disbound from a large 1916 industrial catalog, this unique old eight page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro industrial equipment library. Pages are detached and may contain a small amount of residual glue on edge.