Thanks a lot for posting these, Craig! I'm going to give both of these 'casts a spin soon. I listen to a lot of podcasts and also have a love for old-time radio drama.
When I was twelve, I discovered the
CBS Radio Mystery Theater, a weeknight broadcast of radio plays, some original, others drawn from classic works (e.g., Twain and O'Henry). RMT was hosted by noted stage and screen actor E.G. Marshall (who also narrated my father's long-lost television documentary special on human evolution,
The Man Hunters)
. The casts varied and occasionally included well known actors and actresses. Production values were always high. Story quality varied, especially for original ones, but many episodes are very good and some are outstanding.
Trivia: the opening/closing RMT theme music were borrowed from the Twilight Episode
Two. Other music was drawn from other CBS properties. The creaking door effect that was the show's logo was also borrowed from another radio mystery program,
Inner Sanctum, which was broadcast 30 years earlier. Both programs were produced by Himan Brown.
Nearly 1,400 CBSRMT shows are available to download and listen from
http://www.cbsrmt.com. Technical quality of individual episodes vary. They're great to download and listen to while driving.
Oh, and I just discovered that many episodes of RMT forerunner
Inner Sanctum are available from the Internet Archive:
https://archive.org/details/OTRR_Inner_Sanctum_Mysteries_Singles. I listened to a lot of those, too. They were played in rotation with other classic radio programs on KSFO in the 70's and early 80's during its
Golden Age of Radio hour weekday evenings, which preceded RMT. I was almost certainly one of the few 7th graders in the United States at the time who knew about Fibber McGee's closet and the Shadow's secret power. (You'll have to look those up for yourself.)