Book: Hutchins, Catherine E., et al. 1983 Arts of the Pennsylvania Germans.
• Published as pl. 38.Article: Weiser, Frederick S. 1982 "His Deeds Followed Him: The Fraktur of John Conrad Gilbert". Der Reggeboge: Journal of the Pennsylvania German Society. 16 (2)
Book: Earnest, Russell D. & Earnest, Corinne P. 1997 Papers for Birth Dayes: Guide to the Fraktur Artists and Scriveners. 2 vols. 909.
• On this artist, see "Peter Gilbert," pp. 312-314. This example not listed.