According to this 1959 ad, Shep was involved in a lecture series during a summer session on acting at the Seven Arts Center in New York. There are no other details as to actual dates of the lecture and their content.
Made in the USA
"Can you imagine 4,000 years passing, and you're not even a memory?
Think about it, friends. It's not just a possibility. It is a certainty." - Jean Shepherd - 1975