University of Wisconsin-Madison
Smithsonian Institution Archives
The University of Manchester
American Institute of Physics
California Institute of Technology
University of Illinois at Urbana-Champaign
University of California, Berkeley
University of Louisiana, Lafayette
University of British Columbia
Max Planck Institute for the History of Science, Berlin
Descartes Centre, Utrecht University
University of Pennsylvania
University of Colorado at Boulder
Descartes Centre, Utrecht University
