Michael Denneny, an openly gay editor at a major New York publisher who started a pioneering imprint that was devoted to L.G.B.T.
literature and who helped found a magazine billed as a gay version of The New Yorker, died on April 15 at his home in Manhattan.
He was 80. His brother, Joe, his only immediate survivor, said the cause was likely a heart attack. For about 30 years, Mr. Denneny multitasked his way through a jampacked publishing career.
His major mainstream successes included Judith Thurman’s 1982 biography of the Danish writer Isak Dinesen; the Watergate burglary mastermind G.