![](//upload.wikimedia.org/wikipedia/commons/thumb/3/30/PSM_V81_D622_Simon_Flexner.png/540px-PSM_V81_D622_Simon_Flexner.png)
Dr. Simon Flexner,
Director of the Laboratories of the Rockefeller Institute, from a painting by Adèle Herter, of New York City, presented to the University of Pennsylvania by the colleagues and students of Dr. Flexner at the time he was professor there.