Extension series /

no.1-15 1922-1926; no.16-24 1927-1930; no.24-30; no.25-32A 1931-1933; no.29-39 1933-37; no.32a-35; no.32-39 (1933-37); no.33-42 1934-1938; no.36-44; no.40-44 (1938-39); no.40-49 1938-40; no.43-52 1939-1941; no.45-54; no.45-50 (1939-41); no.46-51 (1940-41); no.50-58 1941-45; no.51-58 (1941-45); no.53-61 1942-1946; no.55-61; no.59-62 (1946-47); no.62-65; no.62-66 1947-1948; no.63-65 (1947-48); no.59-67 1946-49; no.66-69 (1948-49); no.67-71 1949-1950; no.71-75; no.72-76 1950; no.68-75 1949-51; no.70-77 (1950-51); no.76-79 1951-52; no.77-80 1951-1953; no.78-80 (1952-53); no.81-86; no.81-84 (1953); no.81-85 1953; no.80-86 1953-54; no.85-88 (1953-55); no.86-88 1954-1955; no.87-90 1954-56; no.89-90; no.89-91 1955-1956; no.91-94 (1956-57); no.92-95 1957-1958; no.93-96; no.95-96 (1958); no.96 1959; no.98-103; no.98-103 (1958-60); no.104 1960; no.105-106 1960; no.107-109; no.110-112; no.113-115; no.118-119; no.120-121; no.122 1966; no.123-124 1966; no.125-126; no.127-128 1967; no.130; no.131 1968; no.133 1969; no.134 1969; no.135 pt.1 1969; no.135 pt.2 1969; no.136-137 1970; no.140 pt.1 1971; no.140 pt.2 1971; no.138-139 1971-1972; no.141 pt.1 1972; no.141 pt.2 1972; no.142 pt.1 1973; no.142 pt.2 1973; no.141-143 1973-1974; no.144 pt.1 1974; no.144 pt.2 1974; no.145 pt.1 1974; no.145 pt.2 1974