Official websites use .gov A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Valedictory address to the class of medical graduates of the University of Pennsylvania: delivered at the public commencement, March 27th, 1858
Valedictory address to the class of medical graduates of the University of Pennsylvania: delivered at the public commencement, March 27th, 1858