Browse Entries - U
- UC San Diego
- UCLA
- UK Higher Education Archives Hub
- Understanding Evolution: Your One-Stop Source for Information on Evolution
- United States Department of Energy
- United States Office of Coast Survey
- United States Office of the Coast Survey
- Universidad de Sevilla
- Universidad de Valencia
- Universidad de Zaragoza, Servicio de Publicaciones
- Universitat de Barcelona, Barcelona
- University of Bath
- University of Birmingham
- University of Bologna
- University of Bristol
- University of Californa Press
- University of California at Santa Cruz
- University of California, Berkeley
- University of California, San Diego
- University of Cambridge
- University of Chicago Press
- University of Göttingen
- University of Kansas / University of Applied Sciences Offenburg
- University of Melbourne
- University of Melbourne eScholarship Research Centre
- University of Michigan
- University of Michigan Library
- University of Oklahoma
- University of Oklahoma: History of Science Title Pages
- University of Oxford
- University of St. Andrews
- University of Tennessee at Martin
- University of Toronto
- University Scholars Programme, National University of Singapore
- The Unofficial Stephen Jay Gould Archive, Miguel Chavez
- Uppsala University
- Utrecht University