- University of Illinois at Urbana-Champaign, University Library
Pictorial. Ownership. 69x 80 mm. RETRORSUM NUNQUAM. Clock; monogram.  Motto: "Retrorsum nunquam" = Never go backwards  Name of owner from John Starr Stewart's label.
- Munich (Germany)
- 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