[Heliographic engravings from photographs in The knight's armor]

Shackleford, H. K. The knight's armor, a history of the early origin of the order of Knights of Pythias and review of its principles, to which is appended the constitution of the supreme lodge and of the grand and subordinate lodges, for the use of the brotherhood in the U. S. · 1869

"Two heliographic engravings from photographs of portraits. Plates by Frederick W. Von Egloffstein's Heliographic Engraving Co. (uncredited)... [and] one of the few examples of [his] work: this attribution is based on the fact that only von Egloffstein was working in this half-tone method at this time."--Hanson Collection catalog, p. 35