Mark this among the things you will not find elsewhere but the internet.
About a dozen videos of the great and much beloved Tom Lehrer are on Youtube. The posting has of this session recorded September 10th 1967, has been approved for free distribution by the maestro and is not available (and won’t be) in any other medium. SO THERE.
It is SO strange to finally SEE him sing something I know so well – I can’t imagine what I thought he looked like.