c1906 + ticket
c1935 + ticket
1936 + ticket
May 1950 + ticket
May 1950
June 1956 + ticket
1950s + ticket
Early 1957
September 1957
March 1961
1962
1963
July 1963
c1964
May 1964
c late 1964
Late 1964 or 1965
c1966
[Source: Nick Catford & Peter Harding (History)