License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
James Bartram Nicholson. A manual of the art of bookbinding : containing full instructions in the different branches of forwarding, gilding, and finishing : also, the art of marbling book-edges and paper, the whole designed for the practical workman, the amateur, and the book-collector, 1856. The Metropolitan Museum of Art.