A Relaxed Social Occasion

Last Thanksgiving, while I was browsing the new book table at the Seminary Co-op, the guy who works there who knows everything saw that I was holding the Nicola Lacey biography of H.L.A. Hart. He said, "Hey, let me show you the best part of that book". He opened to the section of photos and showed me the following picture:


(By the way, I think that that's John Foster in the tux on the far left.)