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. 713.Book: Weiser, Frederick S. & Heaney, Howell J. 1976 The Pennsylvania German Fraktur of the Free Library of Philadelphia. 1.
• For related example, see pl. 29.