- University of Illinois at Urbana-Champaign, University Library
Pictorial. Ownership. 75x97 mm. FIRST EDITION / W. E. DAIGNAULT. Cave man seated on ground with hammer and chisel working on stone; cave entrance and 3-legged stool.
- 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