 Castleman and Podrazik also point out that another change was taking place around this time.Filmed television series had been seen since the late 1940s, but were "not considered very important to the networks' schedules" because many were of poor quality; live productions from New York were the norm at this time.CBS's success with filmed program "I Love Lucy" in fall 1951, however, had convinced NBC to add a few filmed series to its fall 1952 schedule.