Book: Hutchins, Catherine E., et al. 1983 Arts of the Pennsylvania Germans.
• Published: p. 198, fig. 191,Book: Kauffman, Henry J. 1964 Pennsylania Dutch: American Folk Art.
• 1786, 1789, 1792 Hubener dishes: pp. 94-95, those from 1786 and 1792 bearing two-headed eagles.