Report on Duties on Metals and Manufactures of Metals
By United States Congress. Senate. Committee on Finance, 1912
Testimony regarding the Payne-Aldrich and Dingley Tariff Bills
http://books.google.com/books?id=QDkvAAAAMAAJ
The testimony of W.A. King representing the Parker Gun Co.
http://books.google.com/books?id=QDkvAAAAMAAJ&pg=PA900&dq=damascus+barrels&lr=#PPA893,M1