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 "Eagle #01 (alternate names: Eagle Riding on a Shell #01; Eagle with Flag #01) and pattern number 3177. Maker listed as Ralph Hall (&Co.) or Ralph Hall (& Son), 1822-49, Tunstall, Staffordshire (England).Book: Larsen, Ellouise Baker. 1974 American Historical Views on Staffordshire China.
• Information on print: p. 198