HarperCollins Publishers LLC is a British-American publishing company that is considered to be one of the "Big Five" English-language publishers, along with Penguin Random House, Hachette, Macmillan, and Simon & Schuster. HarperCollins is headquartered in New York City and London and is a subsidiary of News Corp. The company's name is derived from a combination of the firm's predecessors. Harper & Brothers, founded in 1817, merged with Row, Peterson & Company in 1962 to form Harper & Row, which was acquired by News Corp in 1987.
https://en.wikipedia.org/wiki/HarperCollins