Book: Hutchins, Catherine E., et al. 1983 Arts of the Pennsylvania Germans.
• Published as pl. 41.Chapter: Alderfer, Joel D. "David Kulp. His Hand and Pen, Beet it if You Can:" The Bucks County 'Brown Leaf Artist' Identified.". Book: Amsler, Cory M. 2001 Bucks County Fraktur. 151-165.
Article: Alderfer, Joel D. 01//1996 "David Kulp, His Hand and Pen, Beet. sic: it if You Can: Schoolmaster David Kulp of Deep Run". Mennonite Historians of Eastern Pennsylvania Newsletter. 23 (1): 3-6.
Article: Ruth, John L. & Alderfer, Joel D. 1995 "David Kulp, His Hand & Pen: The Brown Leaf Artist Identified". Mennonite Historians of Eastern Pennsylvania Newsletter. 22 (1): 4-9.
Book: Earnest, Russell D. & Earnest, Corinne P. 1997 Papers for Birth Dayes: Guide to the Fraktur Artists and Scriveners. 2 vols. 909.
• Published on p. 480.Journal: Der Reggeboge: Journal of the Pennsylvania German Society.
• Published in 12/1972 issue, p. 8.