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. 146, Fig. aBook: Belden, Louise C. 1980 Marks of American Silversmiths in the Ineson-Bissell Collection. 506 p.
• Examples of spoons made by both Daniel Dupuy Sr. and Jr., pp. 12-13, Fig. 5-6Book: Currier, Ernest M. 1938 Marks of Early American Silversmiths: With Notes on Silver, Spoon Types & List of New York City Silversmiths 1815-1841. 179 p.
• Example of mark and some background information, p. 45Book: Quimby, Ian M. G. 1995 American Silver at Winterthur.
• Published: p. 355, no. 345 a-c