Book: Detweiler, Susan Gray. 1982 George Washington's Chinaware.
• Bristol biscuit plaque with Franklin portrait: p. 139, no. 118, noting similar one given to G. Washington. 1777-78.Book: Detweiler, Susan Gray. 1982 George Washington's Chinaware.
• Bristol biscuit plaque with Washington portrait: p. 148, no. 128, noting similar sent by Richard Champion from Bristol factory to G. Washington, 1790. Plaque 1777-78.Book: Adams, Brian & Thomas, Anthony. 1996 A Potwork in Devonshire: The History & Products of the Bovey Tracey Potteries 1750-1836.
• Floral porcelain plaque attributed to Bovey Tracey, Devonshire: pp. 25 and 68, with William Ellis IV quote linking plaque to Indeo Pottery, Bovey Tracey. Equally delicately modeled to Winterthur's.