Book: Earnest, Russell D. & Earnest, Corinne P. 1997 Papers for Birth Dayes: Guide to the Fraktur Artists and Scriveners. 2 vols. 909.
• For more on Dulheuer, see pp. 201-204. This example not listed.Book: Stopp, Klaus. 1997 The Printed Birth and Baptismal Certificates of the German Americans. 2.
• For two other examples of this edition, see p. 128. These examples not listed.Book: Stopp, Klaus. 1998 The Printed Birth and Baptismal Certificates of the German Americans. 6.
• For the fraktur made for Jacob Graff, see p. 193.Article: Minardi, Lisa. 2007 "A Timely Discovery: The Story of Winterthur's Jacob Graff Clock". Antiques and Fine Art. 7 (5): 238-239.
• More info. on the Graff family.Catalogue: Minardi, Lisa. 2015 A Colorful Folk: Pennsylvania Germans & the Art of Everyday Life.
• Published: fig.9, p.12Article: Minardi, Lisa. 10//2015 A Colorful Folk: Pennsylvania Germans and the Art of Everyday Life. Early American Life Magazine. 18 - 25.
• Published: p. 21