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: 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.
• Information on the Moulton family, p. 100Book: McGrew, John R. 2004 Manufacturers' Marks on American Coin Silver. 176.
• Example of mark, possibly Abel Moulton, p. 48Book: Flynt, Henry N. & Fales, Martha Gandy. 1968 The Heritage Collection of Silver: With Biographical Sketches of New England Silversmiths, 1625-1825. 391 p.
• Biographical information on Abel Moulton and example of mark, pp. 280-281Book: Flynt, Henry N. & Fales, Martha Gandy. 1968 The Heritage Collection of Silver: With Biographical Sketches of New England Silversmiths, 1625-1825. 391 p.
• Information on all of the Moultons of Newburyport, pp. 280-283