Book: Palmer, Arlene. 1993 Glass in Early America: Selections from the Henry Francis du Pont Winterthur Museum. 425 pp.
• Published: p. 345, no. 327, attributes this piece as "possibly Newcastle-upon-Tyne, decoration possibly by William Beilby Workshop, 1775-90," and discusses how arrived at attribution.Book: Handley, Joseph M. & Spero, Simon. 1991 18th Century English Transfer-Printed Porcelain and Enamels.
• "IG 1793" inscribed oval white perfume flask with somewhat similar scrollwork: p. 292, no. 14.4, polychrome painted enamels and (opp. side) black-printed Milkmaid milking cow. Possibly Liverpool.Article: Walton, Karin M. 1999 Bristol Museums and Art Gallery: Collectors of Glass and their Collections: William Edkins, etc., in 1999. Glass Collectors and their Collections in Museums in Great Britain. 33-40.
• Similar white glass form to Winterthur's, inscribed "M. Davidson," attributed to Newcastle.