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 Sawyer marks, brief background information, sources, p. 373Book: McGrew, John R. 2004 Manufacturers' Marks on American Coin Silver. 176.
• Description of Sawyer mark from similar spoon, p. 79Book: Rainwater, Dorothy T. & Redfield, Judy. 1998 Encyclopedia of American Silver Manufacturers. 418 p.
• Short biography on Henderson Sawyer, p. 293Book: Belden, Louise C. 1980 Marks of American Silversmiths in the Ineson-Bissell Collection. 506 p.
• Information on L.P. Coe, p. 115Book: McGrew, John R. 2004 Manufacturers' Marks on American Coin Silver. 176.
• Description opf mark and information on L.P. Coe, p. 79Book: Darling, Herbert. 1964 New York State Silversmiths. 228 p.
• Information on L.P. Coe, p. 55