February 2009 Bookplate Junkie post, Elizabeth Watson Diamond "was a remarkable collector. She commissioned many artists to create bookplates for her library." Some more about Diamond can be found on this Art of the Print web page.
Penn State Special Collections Library, "she utilized a uniquely American method called the 'Provincetown Print' or 'White-Line Woodcut.' She wrote a history of the Provincetown Print, which can be read here.
Thanks so much for sharing these terrific bookplates, Lew!