Keystone Metal Quarry Catalog, 192

New York: McGraw-Hill, 1929. Hard Cover. Good. 4to - over 9¾" - 12" tall. 445p. Includes Heisler Locomotive Works, Sanford-Day Iron Works, Harnischfeger Corp on steam shovels, the Thew Shovel company, and many of the suppliers of the chains, Besides many photographs of steam shovels and air compressors, there are all the state of the art items just before the Great Depression. Most libraries have the 1926-1928, only five have the 1929. The 1931 was the last issue. There are two small cut outs on p. 175 else a very good copy.