In what year was the magazine first published that was the source of the stories for the anthology Hell Hath Fury ?
Hell Hath Fury (anthology): Hell Hath Fury is an anthology of fantasy fiction short stories edited by George Hay, the third of a number of anthologies drawing their contents from the classic magazine "Unknown" of the 1930s-1940s. Unknown (magazine): Unknown (also known as Unknown Worlds) was an American pulp fantasy fiction magazine, published from 1939 to 1943 by Street & Smith, and edited by John W. Campbell.
1939