There's a nice collection of Helena Bochorakova-Dittrichova, of Czechoslovakia, woodcuts in the National Museum of Women in the Arts library. She used these in silent graphic novels. I was fortunate enough to be shown these by the librarian recently. The ones on black paper were never published and appear to be for a planned travelogue. Besides the original prints, the books are mostly signed by B-D and this is probably one of the most significant collections of her material in the US. In the Czech Republic, she's a major artist.
Slania, Heather. 2014.
The First Woman Graphic Novelist: Helena Bochorakova-Dittrichova, May 12-November 14, 2014.
Women in the Arts (Fall): 22-25