Variety shows from the 70s?

Anyone know of an Addon that had the Variety shows from the 70s? Carol Burnett and the Sony and Cher show our two that pop into mind. I think you can see some of the greats of early TV on these shows, I'm a little too young to remember. Anyone have any ideas?

I found a lot on regular addons via the search button such has barnaby jones, threes company, Maude, and such also found a lot on youtube.