- University of Illinois at Urbana-Champaign, University Library
Pictorial. Ownership. 98x121 mm. EX.LIBRIS / HAMMERSCHLAG GUSZTAV / [artist's initials:] RS. Woman with hammer (pun on owner's name); background pattern with hammers. Books (on spines: 'Maupassant', 'Jokai').
- Rare Book and Manuscript Library, University of Illinois at Urbana-Champaign; For more information, please contact the Rare Book and Manuscript Library: https://illinois.edu/fb/sec/7016277