Macmillan Inc.

Macmillan Inc. was an American book publishing company originally established as the American division of the British Macmillan Publishers. The two were later separated and acquired by other companies, with the remnants of the original American division of Macmillan present in McGraw-Hill Education's Macmillan/McGraw-Hill textbooks, Gale's Macmillan Reference USA division, and some trade imprints of Simon & Schuster (Scribner, Free Press, and Atheneum Books) that were transferred when both companies were owned by Paramount Communications.

The German publisher Holtzbrinck, which bought the British Macmillan in 1999, purchased U.S. rights to the Macmillan name in 2001 and rebranded its American division with it in 2007. Provided by Wikipedia