For more information on The Wistar Institute Cancer Center, please contact:
Associate Director, Cancer Center Administration
The Wistar Institute
3601 Spruce Street
Philadelphia, PA 19104
The microscope in the image belonged to William E. Horner, M.D., a collaborator with Caspar Wistar, M.D., in the early 1800s.
Dr. Horner, a lecturer at the University of Pennsylvania, was a pioneer of the use of microscopes in anatomical and medical research. He authored Special Anatomy and Histology, a seminal text on the subject.