Electronic: Transferware Collectors Club. Transferware Collectors Club Database of Patterns & Sources. Transferware Collectors Club 03/13/2024 https://www.transferwarecollectorsclub.org/members/database
• Published: Included under pattern name "C. Levering Baltimore" and pattern number 14371. Maker listed as Samuel Alcock & Co., 1828-1859, Cobridge & Burslem, Staffordshire (England).Article: Ewins, Neil. 1997 "Supplying the Present Wants of Our Yankee Cousins ...": Staffordshire Ceramics and the American Market 1775-1880. Journal of Ceramic History. 15: All.
• Published: p. 116, pl. 22, on p. 117 ftn. 64 noting 1853 Business Directory of Baltimore lists "Levering Bros. & Co., 98 W. Lombard Street."Electronic: Walthall, John A. 2013 Queensware Direct from the Potteries: U. S. Importers of Staffordshire Ceramics In Antebellum America: 1820 - 1860. Illinois State Archaeological Society 08/05/2014
• Published: pp. 7-9 (especially p. 9), noting association with Clark and 118-120 Lombard, Baltimore address. Dish made for Clinton Levering.Article: Earls, Amy C. & Miller, George L. 2005 "1830s Painted Wares from a New Orleans Importer". Ceramics in America. (2005): 247-252.
• Whiteware exports to New Orleans importer (some marked): see whole article.