The only thing I can suggest is Tv-now
which I think joined with Tv-guide.
They USED to hold things for one month, but the thing is you have to look it up by ACTOR not by show.
This link says what it is and does
http://biz.yahoo.com/bw/070215/20070215005289.html?.v=1
and this link is for tv-now
http://www.tv-now.com/stars/stars.html
and I looked up carol Burnett just now, and it loaded from febraury 12th, till now- showing a Mad about you episode, and a made for tv movie.
So you might luck out, depending on how long ago you need.
BUt its a good, rarely known resource and they usually do the lineup a month at a time.
I think, THINK, not sure
zap2it also has an archive view.
Good luck