Book: Montgomery, Charles F. 1973 A History of American Pewter.
• Published: fig. 10-8, p. 163Article: Fennimore, Donald L. 2012 "Peter Derr's Spoon Mold" in The Bulletin, publsihed by the Pewter Collectors' Club of America, Inc., Summer 2012, vol. 14, no. 7, pp. 30-34. Pewter Collectors Club of America Bulletin. 14 (Summer): 30-34.
• Published: Fig. 8, p. 34.