Book: Belden, Louise C. 1980 Marks of American Silversmiths in the Ineson-Bissell Collection. 506 p.
• An illustrated glossary of spoon terms, pp. 467-488Book: Belden, Louise C. 1980 Marks of American Silversmiths in the Ineson-Bissell Collection. 506 p.
• Example marks, brief background information, sources, p. 148, Fig. bBook: Rainwater, Dorothy T. & Redfield, Judy. 1998 Encyclopedia of American Silver Manufacturers. 418 p.
• Biographical information on the Wm. B. Durgin Co, pp. 98-99Book: Rainwater, Dorothy T. & Redfield, Judy. 1998 Encyclopedia of American Silver Manufacturers. 418 p.
• Gorham Corporation information and chronology, pp. 127-131