Dr. William Williams Keen Portrait by James L. Wood, 1901 Courtesy of the College of Physicians of Philadelphia

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The images of the online version of When the President is the Patient are a part of the original exhibit at the College of Physicians of Philadelphia, located at 19 South Twenty-Second Street, Philadelphia, Pennsylvania, and may not be used whole or in part, individually, or as part of a derivative work without express written permission. Email: cppinfo@collphyphil.org Phone: 215-563-3737 extension 282