This was probably around 1966. Peter got a PhD in mathematics from UT Austin and became a professor at Penn State. He is now retired and a professor emeritus, and has become a local politician in State College, having been elected to the borough council.
(It's a good portrait of Peter, and I wish I had taken it, but I am pretty sure I didn't. It's from a negative in a box of old, mostly family photographs we have had for years: if anyone knows who did take it let me know and I'll label it appropriately.)