I suppose you already know about Internet Archive old time radio mp3s? Got prit-near everything for free. In case you hadn’t run into it yet:
https://archive.org/search.php?query=otr&and[]=mediatype%3A%22audio%22&and[]=subject%3A%22Old+Time+Radio%22&and[]=collection%3A%22oldtimeradio%22
Yep.
Johnny Dollar must be spinning in his action packed radio grave expense account.
Who knows what evil lurks in the heart of DC?
The Shadow Knows