Book: Ames, Kenneth L. 1977 Beyond Necessity: Art in the Folk Tradition.
• Published: p. 34, fig. 19.Article: Brown, Johanna. 2009 Tradition and Adaptation in Moravian Press-Molded Earthenware. Ceramics in America. 105-38.
• Slightly differently modeled lead-glazed redware turtle flask & mold: p. 114, fig. 14. Salem, NC, 1800-50.Article: Brown, Johanna. 2009 Tradition and Adaptation in Moravian Press-Molded Earthenware. Ceramics in America. 105-38.
• Green-glazed earthenware different model: p. 115, figs. 15-18. Salem, NC, 1800-20.Book: Bivins, John Franklin. The Moravian Potters in North Carolina.
• Moravian turtle flasks & molds for same: pp. 211-13, figs. 220-222, Rudolph Christ, c. 1800-10(?) in 3 sizes. Original mold from Box Turtle.Book: Webster, Donald Blake. 1971 Decorated Stoneware Pottery of North America.
• US salt-glazed turtle flask: p. 204, no. 292, probably PA, 2nd 1/2 19th centuryArticle: Brown, Johanna. 2010 A Recently Discovered Moravian Turtle Bottle. Ceramics in America. 224-26.
• Discussion of Moravian versions of turtle bottles (or flasks)Catalogue: Crocker Farm, Inc. Crocker Farm Auction Catalogue.
• Moravian green turtle flask: Spring 2024 sale, lot 22, redware Moravian example, Salem NC, c. 1800, with useful discussion.