32. Gallinger, Jacob H., Washington, D.C., to William W. Keen, Philadelphia, Pa., 18 March 1901

The collection contains letters received by William W. Keen and copies of his replies, 1883-1919, along with a few newsclippings concerning controversies over vivisection in the late 19th and early 20th century. Keen's letters define his defensive position on vivisection.

Correspondents are physicians, political figures, or social activists and include: James M. Brown and Jacob H. Gallinger on alleged experimentation on human beings; Simon Flexner on a serum for cerebrospinal meningitis; William S. Pierce and Floyd W. Tomkins on the moral arguments against vivisection; and Caroline Earle White on Keen's use of a dog for experimentation with nerve reattachment. Other correspondents are Horace K. Regar, George Henry Simmons, and William Henry Welch. A calendar of the correspondence is included.