Book: Hutchins, Catherine E., et al. 1983 Arts of the Pennsylvania Germans.
• Published as fig. 233, pp. 242-43.Book: Amsler, Cory M. 2001 Bucks County Fraktur.
• Published on p. 135 and 157. For more on David Kulp, see pp. 150-165 and 270-274.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. For more info. on David Kulp, see 479-481.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.
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.
Book: Bird, Michael S. 2002 O Noble Heart: Fraktur and Spirituality in Pennsylvania German Folk Art.
• Published as fig. 120, on p. 122.