This is an amazing archive of interviews. The audio quality is astounding — you would think these were podcasts from this week. I enjoyed the 1959 discussion with Arthur C. Clarke as well:
https://studsterkel.wfmt.com/programs/arthur-charles-clarke-...
It really is. To quote an earlier comment of mine, the interview archive is immense and diverse. It spans 45 years, from 1952--1997, ran 1 hour each weekday, and the interview guests range from the highly famous to street and school interviews. I've hit on a few gems in particular.
The AWS back-end could be browsed or downloaded directly via AWS tools a ways back, and was about 600 GB last I'd checked. You'll have to sort out your own directory of content, however. Much of what's in there still isn't included in the official directory, again, at last check, though that includes numerous fragments and partial-tape interviews.