If you’ve read HOMICIDE FOR THE HOLIDAYS, then this is the rendition of A Christmas Carol that’s mentioned in the first chapter (although not by name). This version aired December 23, 1938 – the night of the Witchell’s Christmas party.
A movie version of A Christmas Carol had just come out starring Reginald Owen. That was a bit of casting blasphemy at the time since Lionel Barrymore was famous for his portrayal of Scrooge on the radio. He’d reprise the leading role (on radio at least) in 1939.
By the way, if Lionel Barrymore sounds familiar to you it’s probably because you know him as nasty old Mr. Potter in It’s a Wonderful Life. (That character isn’t far off Ebenezer Scrooge – except that Mr. Potter never has an epiphany and never becomes a better person…)