Book: Palmer, Arlene. 1993 Glass in Early America: Selections from the Henry Francis du Pont Winterthur Museum. 425 pp.
• Published: p. 382, no. 397Book: McKearin, George S. & McKearin, Helen. 1989 American Glass.
• Information on Pike's Peak flasks: p. 479Article: White, Harry Hall. 03//1931 Rare Variants of Common Bottles. Antiques.
• Discussion of unusual models: pp. 191-92, figs. 16-21.