Before revision: 1914 Fred H. Colvin, Frank A. Stanley American machinists' handbook and dictionary of shop terms: a reference book of machine shop and drawing room data, methods and definitions 2nd ed New York and London, McGraw-Hill This edition is public-domain (copyright expired) and can be read for free in digitized form via Google Book Search.
After revision: 1914 2nd ed New York and London, McGraw-Hill This edition is public-domain (copyright expired) and can be read for free in digitized form via Google Book Search.