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. 86Book: 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 marks and some background information, p. 22Book: Ensko, Stephen G. C. 1948 American Silversmiths and Their Marks III. 285 p.
• Example of mark and brief background information, p. 161Book: Belden, Louise C. 1980 Marks of American Silversmiths in the Ineson-Bissell Collection. 506 p.
• Information on maker R.H.L. VIllard and example marks, p. 423Book: Goldsborough, Jennifer Faulds & Harper, Ann Boyce. 1975 Eighteenth and Nineteenth Century Maryland Silver in the Collection of the Baltimore Museum of Art. 204 p.
• Information on maker R.H.L. Villard, p. 197