1. William C. Ketchum Jr.,
American Stoneware
(New York: Henry Holt and Company, 1991), p. 87.
2. Georgeanna Greer,
American Stonewares: The Art and Craft of Utilitarian Potters
, 3rd ed., rev. (Atglen, Pa.: Schiffer Publishing, 1999), p. 87.