Street & Smith's Unknown/Unknown WorldsFantasyScience FictionWeird FictionUnited Kingdom·1939–1949·80 issuesAll1939 (14)1940 (24)1941 (8)1942 (9)1943 (8)1944 (3)1945 (3)1946 (2)1947 (3)1948 (3)1949 (3)ST1944-January1944-JanuaryST1944-May1944-MayST#NAutumn (1944)#NAutumn (1944)
