Early on in my time at Southeastern Baptist Theological Seminary, I had the opportunity to attend one of the best academic conferences I've ever been to. It was a conference on the life and work of C. S. Lewis.
The breakout sessions were ok, but this hour-long lecture by Walter Hooper, Lewis' editor and curator of his literary remains, was worth the trip. Hooper is known for carefully guarding Lewis' image (which one might expect, given his job), so there might be a bit of hagiography here. However, I still find the lecture very enjoyable.
I pass this resource on to you, for your enjoyment.