The Lucy Show

I Love Lucy was most likely the top sitcom of the first decade of television in the United States. Near the end it morphed into the Lucy-Desi Comedy Hour and its final episode aired April 1, 1960. Exactly 2½ years later Lucy was back with a new sitcom, The Lucy Show. The new show enjoyed great success through the 60's just as I Love Lucy did during the 50's. Its first season, 1962-1963, it was the #2 rated sitcom (behind The Beverly Hillbillies). It was also rated #2 during its 6th and final season (behind the Andy Griffith Show) of 1967-1968. In fact, 3 of the top 4 sitcoms that season aired back-to-back-to-back Monday nights on CBS: Lucy Show, Andy Griffith, Family Affair. 
Lucy was back that autumn with a new show called Here's Lucy and that also enjoyed a six year run. During it's 3rd season (1970-1971) it was the #1 rated sitcom on American television. 
As I recall, this show started off as a family type of thing with her former I Love Lucy co-star Vivian Vance and kids, etc., then about halfway through its run it changed formats and was centered around Lucy's job at a bank and no kids.
The Lucy Show