Article: Brown, Johanna. 2009 Tradition and Adaptation in Moravian Press-Molded Earthenware. Ceramics in America. 105-38.
• Several squirrel flask models, one quite close to Winterthur's: p. 116, fig. 19, with similarly colored runny vertical stripes. Salem, NC, 1804-20. H.: 8 1/2"Article: Hartley, Michael O. 2009 Salem Pottery after 1834: Heinrich Schaffner and Daniel Krause. Ceramics in America. 139-60.
• Buisquit earthenware paw fragment (Schaffner-Krause pottery, 1834+) & green-glazed (Christ pottery, 1804-29) squirrel flask:p. 151, fig. 20, Salem, NC.Article: Erickson, Michelle & Hannah, Caroline M. 2009 Making a Moravian Squirrel Bottle. Ceramics in America. 200-216.
• See for manufacturing of this type of flask.Electronic: Zipp, Mark. 01/20/2010 http://www.crockerfarm.com/blog/category/moravian-pottery/.
• Blog entry discussing similar flasks/bottles.Article: Brown, Johanna. 02//2011 Eye on Antiques: Moravian Figural Bottles. Early American Life Magazine. XLII: 8-15.
• Article includes some Winterthur flask forms: pp. 10 (3 sizes of fish), 12 squirrels & mold), 13 (bear). Several other forms and molds.Catalogue: Crocker Farm, Inc. Crocker Farm Auction Catalogue.
• Squrrel flask in brown glaze, sold at auction: July 19, 2014, lot 53, Rudolph Christ, Salem NC, c. 1804-29Catalogue: Crocker Farm, Inc. Crocker Farm Auction Catalogue.
• Moravian squirrel flask, similar overall to Winterthur example: Fall 2023 sale, lot 28. Attributed to Rudolph Christ, Salem, NC, 1804-29Catalogue: Crocker Farm, Inc. Crocker Farm Auction Catalogue.
• Unusual form squirrel shape bottle: Spring 2022 sale, lot 209, probably North Carolina, late 1800s or early 1900s