Somewhat related since this is the Western thread, I have been enjoying tremendously a set of late 1970's radio shows about the Gunsmoke radio show complete with interviews with the main principals of the original show: writers, producers, directors and actors. It provides a nice look at the show both from the content and production angle. Should be of interest to some here.
I ran across it in the Podcast feed of the Jack Benny OTR Podcast.
Here's the link to the first of 5 shows - https://www.podomatic.com/podcasts/jack_benny/episodes/2017-03-07T21_12_49-08_00
You can find link to others from the main page or look for it in your podcast app of choice - http://jack_benny.podomatic.com/