Holdings
27.1911/12,1-3; 28.1912/13,1-4; 29.1913/14,1-4; 30.1915,2; 31.1915/17,3-5; 33.1917/18,7-8; 34.1918/19,9-10; 35.1919,1-2; 36.1920,1-4; 37.1921/22,1-2; 38.1922,1-2; 39.1923/24,1-4; 40.1924/25,1-4; 41.1926,1-4; 42.1927,1-4; 43.1928,1; 44.1929 - 54.1939