Complex sentence: "Family Scrapbook" is the final episode of the iconic American television series "Leave It to Beaver", which was televised initially on CBS (1957-1958), and, in its final seasons, on ABC, (1960-1963).
Split into simpler sentences: Family Scrapbook is the final episode of the iconic American television series "Leave It to Beaver". The series was televised initially on CBS (1957-1958), and, in its final seasons, on ABC, (1960-1963).