Bernard Harper Friedman (July 27, 1926 – January 4, 2011), better known by his initials, "B. H.," or known as Bob to his friends was an American author and art critic who wrote biographies of Jackson Pollock and Gertrude Vanderbilt Whitney, a number of novels that combined his experiences in the worlds of art and business, and an autobiographical account of his use of psychedelic drugs with Timothy Leary.