As I wrote someone else, perhaps his friend borrowed his coat for a ‘date’. Who knows? Another grassy green knoll mystery I hope all of you solve!
The image 'courtesy Occidental College Special Collection' apparently from 1980, although he's quite incredibly much taller than anyone else in the room...seems to show he's wearing the same watch, that's IF the image supposedly from Occidental is genuine:
I'm under the impression the mystery of the enlarged cranium goes a little deeper than who might have borrowed a jacket...