George Plimpton — American Journalist born on March 18, 1927, died on September 25, 2003

George Ames Plimpton was an American journalist, writer, literary editor, actor, and occasional amateur sportsman. He is widely known for his sports writing and for helping to found The Paris Review. He was also famous for "participatory journalism" which included competing in professional sporting events, acting in a Western, performing a comedy act at Caesars Palace in Las Vegas, and playing with the New York Philharmonic Orchestra and then recording the experience from the point of view of an amateur... (wikipedia)

The New York Times published the guest list on the front page. The masks were a brilliant concept.
I remember being awed by it - the uniqueness and nicety of style - and I suspect I was a bit jealous because we were more or less of the same generation.
He was interviewed in the early '60s by a young novelist, Pati Hill.
It is also one of the pleasures of oral biography, in that the reader, rather than editor, is jury.
My favorite monologue in the book is Kate Harrington's story of her relationship with Truman.