Everton's second successful era started when Harry Catterick was made manager in 1961. In 1962–63, his second season in charge, Everton won the League title and in 1966 the FA Cup followed with a 3–2 win over Sheffield Wednesday. Everton again reached the final in 1968, but this time were unable to overcome West Bromwich Albion at Wembley. Two seasons later in 1969–70, Everton won the League championship, nine points clear of nearest rivals Leeds United. During this period, Everton were the first English club to achieve five consecutive years in European competitions—seasons 1961–62 to 1966–67.

In what year did Everton's second successful era begin?