Also, those old Dick Cavett interviews are great. They are available on streaming services.
I watched another cringe worthy one recently with David Bowie (very high on coke). It was painful. These interviews are a wealth of history.
However, most of them are ‘cringe worthy’ by today’s standards of polished responses and canned questions.
EDIT: The Tom Snyder interviews are good for that time period. There’s one with Tom Snyder and Ayn Rand that’s cringe worthy… .