Stanley P. Morse's Key Publications, based variously at 1775 Broadway, 280 Madison Avenue, 175 Fifth Avenue, and 261 Fifth Avenue in New York City, New York, published comic books from 1951 to 1956. The first, a horror anthology titled Mister Mystery, under the Media Publications imprint, ran 19 issues cover-dated September 1951 to October 1954, and featured much early work by the art team of Ross Andru and Mike Esposito. Wrote historian Lawrence Watt-Evans,