Alfred A. Knopf Jr., Influential Publisher, Dies at 90

Alfred A. Knopf Jr., who left the noted publishing house run by his parents to become one of the founders of Atheneum Publishers in 1959, died on Saturday. He was 90, the last of the surviving founders, and lived in New York City.

With Simon Michael Bessie and Hiram Haydn, an editor at Bobbs-Merrill, founded Atheneum.

Atheneum got lucky fast. Its first three lists produced three No. 1 best sellers: “The Last of the Just” (1960), a novel about the Holocaust by André Schwarz-Bart; “The Making of the President, 1960” (1961), the first in Theodore H. White’s series on presidential campaigns; and “The Rothschilds: A Family Portrait” (1962) by Frederic Morton.