Additional References:

Pewter in America: It's Makers and their Marks.  Barre Publishers, 1970  Barre, MA.	A History of American Pewter  Charles F. Montgomery  Praeger Publishers 1973  New York, NY
The Pocket Book of American pewter:  The Makers and their Marks.  Celia Jacobs  Revised 2nd Edition  Boston:  Caners, 1970  Boston, MA	American Pewter  J. B. Kerfoot  Houghton Mifflin 1924  Boston, MA
A Guide to American Pewter  Carl Jacobs  McBride Company 1957  New York, NY	Old Pewter, It's Makers and Marks in England, Scotland, and Ireland.  Charles E. Tuttle Company  Rutland, VT  1963
Working With Pewter  International Tin Institute  Fraser Road, Perivale, Greenford, Middlesex  Publication # 566	More Pewter Marks  Christopher A. Peal  Dist:  Price Glover Inc. 1976  New York, NY
Pewter: Spun, Wrought, Cast  Osburn and Wilber  International Textbook Co.  1938  Scranton, PA