Article: Griffiths, Antony. 2022 The origin of the Toby Jug. Transactions of the English Ceramic Circle. 32: 123-44.
• Extensive article discussing Toby Jug originsArticle: Goldberg, Arthur F. 2003 Highlights in the Development of the Rockingham and Yellow Ware Industry in the United States--A Brief Review with Representative Examples. Ceramics in America. 26-46.
• Probably from same mold: p. 36, fig. 18 (left), attributed to the Salamander Works, New York City or Woodbridge NJ, 1837-50s, probably pattern J in the Works 1837 price-list.Catalogue: Crocker Farm, Inc. Crocker Farm Auction Catalogue.
• Quite similar Toby jug: July 18, 2015 sale, lot. 376, "probably American Pottery Co., Jersey City, NJ, circa 1833-1850."Book: Stradling, Diana. 2005 "Fancy Rockingham" Pottery: The Modeller and Ceramics in Nineteenth-Century America.
• Much the same (but smaller) jug with "Uncle Toby/1829" inscribed on small jug: pp. 38-39, no. 25, with D & J Henderson" mark noting Jersey City.Book: Drakard, David. 1992 Printed English Pottery. History and Humour in the reign of George III 1760-1820.
• Origin of subject: p. 89, derives from "Toby Fillpot" a fictitious character. (See 1983. 0013 Notes.)Book: Troeger, Virginia B. & McEwen, Robert. 2002 Woodbridge: New Jersey's Oldest Township.
• History of Salamander Works: p. 58.Book: Oswald, Adrian, et al. 1982 English Brown Stoneware 1670-1900.
• Salt-glazed brown stoneware toby jug: p. 149, no. 113 a, b, Oldfield, Derbyshire.Book: Blaettler, Roland. Céramique du Portugal du XVIe au XXe Siècle.
• Portuguese creamware Toby and Ann Gunn jugs: p. 152, nos. 76-77, creamware 1800-25, color glazed, Porto, Portugal.Book: Museu Nacional de Soares Dos Reis. 2009 Fabrica de Louca de Miragaia.
• Portuguese tin-glazed toby jugs: p. 181, nos. 156-57, polychrome, Miragaia factory, painted "R" mark, late 18th/early 19th centuryBook: Lu, Zhangshen. 2012 Passion for Porcelain: Masterpieces of Ceramics from the British Museum and the Victoria and Albert Museum.
• Blanc de Chine Toby jug in similar general form: pp. 256-57, Dehua, Fujien province, China, possibly late 19th century. (See pp. 254-55, no. 082 for Staffordshire earthenware example, c. 1785.)Book: Glanville, Philippa & Lee, Sophie. 2007 The Art of Drinking.
• Detailed discussion of Toby Jug origins and meaning: p. 89