Duplicated episodes in episode guide
As i've been watching The Jack Benny Program on a local channel, I've been adding data to the IMDB. It's become clear to me that there are some seriously bogus entries in thie episode guide. In particular, there are episodes from the mid 50s which are duplicates of episodes from the early 60s. This becomes clear if you notice exactly the same cast in both episodes. In many of the cases that I've looked it, the later date appears to be the correct date because the episodes are directed/produced by Fred De Cordova who seems to have not actually worked on the show until 1960 or so.
Other online episode guides appear to have the same errors.
As I've added data to some of the mid-50s shows, I seem to have aggravated the error.
I wish I knew where an accurate episode guide could be found.
From here on out, I'm going to look closely at the copyright date of episodes I watch and I'm considering deleting the corresponding similar episode from a different year.