1. Out of the Fiery Furnace;Raymond,1986
2. Critical Materials—A Superalloy Manufacturer's Viewpoint;Boesch,1983
3. Colby, E. A. (1890). Process of Melting, Refining and Casting of Metals. United States Patent 428,522.
4. Dedication speech at “Superalloy 1980—Proceedings of the Fourth International Symposium on Superalloys”, September 21–25, 1980.