Original SequenceFrontier FictionWesternUnited States·1936–1960·131 issuesAll1936 (5)1937 (6)1938 (8)1939 (4)1940 (3)1941 (3)1942 (6)1943 (5)1944 (5)1945 (6)1946 (5)1947 (6)1948 (5)1949 (6)1950 (6)1951 (4)1952 (5)1953 (6)1954 (6)1955 (5)1956 (6)1957 (6)1958 (6)1959 (6)1960 (2)OR#V20N04 (1957-January)#V20N04 (1957-January)OR#V20N05 (1957-March)#V20N05 (1957-March)OR#V20N06 (1957-May)#V20N06 (1957-May)OR#V21N01 (1957-July)#V21N01 (1957-July)OR#V21N02 (1957-September)#V21N02 (1957-September)OR#V21N03 (1957-November)#V21N03 (1957-November)
