- University of Illinois at Urbana-Champaign, University Library
Pictorial. Ownership. 37x42 mm. LEX / William Andrews Clark, Jr. Owl perched on books, beside seal (sun on horizon behind mountains, plough in foreground), globe, banner with motto: Lex (light). Printed in red.
- 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