Glass sands of the Bellus River: Book II, Chapt. 10, Section 2. Fol. 38 ro., col. 2, lines 13 ff.
Digitized by Boston Photo Imaging in September 2009.
Manuscript on vellum with illuminated initials.
P.  published in The Juliette K. and Leonard S. Rakow Research Library [brochure], 2011: 127841, cover, p.  (fig. 15).