Railway Executive: North Wales
1950
1950
1950
1950
1952
1948
1950
1948
1952
1950
1952
1952
1952
1950
1950
1949
1951
1950
1949
1948
circa 1964
1939
1939
1939
1950-1970
1950-1970
1950-1970
1950-1970
1950-1970
1950-1970
1950-1970
1950-1970
1950-1970
1950-1970
1950-1970
1952
1949
1952
1952-1955
1947
1950
1948
1942