Article: Robacker, Earl F. 1985 Johann Adam Eyer: 'Lost' Fraktur Writer of Hamilton Square. Pennsylvania Folklife. 34 (3): 98-113.
• See pp. 99, 102 for related examples.Book: Weiser, Frederick S. 1994 The Gift is Small The Love is Great: Pennsylvania German Small Presentation Frakturs.
• See p. 29 for related example.Article: Robacker, Earl F. 1971 The Fraktur of Monroe County. Pennsylvania Folklife. 21 (1): 2-15.
• See p. 7 for related example.Book: Earnest, Russell D. & Earnest, Corinne P. 1997 Papers for Birth Dayes: Guide to the Fraktur Artists and Scriveners. 2 vols. 909.
• On Eyer, see pp. 256-260.Catalogue: Minardi, Lisa. 2015 A Colorful Folk: Pennsylvania Germans & the Art of Everyday Life.
• Published: fig. 80, p.59Article: Minardi, Lisa. 10//2015 A Colorful Folk: Pennsylvania Germans and the Art of Everyday Life. Early American Life Magazine. 18 - 25.
• Published: p. 24