And I found a postal address for his present or last school, and an email address.
Granted, this looks like an unusual way to reconnect with Joe after 43 years have gone by. But I did give him my real name and the wrong name for the college we attended. It should read 'Elborn'. If he truly deserves to be called a 'gifted/enrichment teacher' he will catch on immediately and dash off a quick reply.