Book: Palmer, Arlene. 1993 Glass in Early America: Selections from the Henry Francis du Pont Winterthur Museum. 425 pp.
• Published: no. 165, p. 206; color pl. 8, p. 45Book: Palmer, Arlene. 2004 Artistry and Innovation in Pittsburgh Glass, 1808-1882: from Bakewell & Ensell to Bakewell, Pears & Co.
• Similar amethyst and cobalt glass sugar bowls: p. 112, cat. nos. 110-11, possibly Bakewell, Page & Bakewell or successors, Pittsburgh, 1825-40