Joseph T. "Cap" Shaw (May 8, 1874 – August 2, 1952) was the editor of Black Mask magazine from 1926 to 1936.
[1][2] Under his editorship, Black Mask published many works of crime fiction now recognised as classics of the genre, by authors such as Dashiell Hammett, Raymond Chandler, and Erle Stanley Gardner.
[2][3][4] Chandler greatly admired Shaw's ability to encourage Black Mask writers, claiming in a letter, "We wrote better for him than we could have written for anybody else.
"[1] Despite the critical and commercial success of Black Mask, Shaw was eventually fired from the magazine, succeeded by Fanny Ellsworth.
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