Belle da Costa Greene (1879–1950) was one of the most prominent librarians in American history. She ran the Morgan Library for forty-three years—initially as the private librarian of J. Pierpont Morgan and then his son, Jack, and later as the inaugural director of the Pierpont Morgan Library (now the Morgan Library & Museum). She was the daughter of Genevieve Ida Fleet Greener (1849–1941) and Richard T. Greener (1844–1922), the first Black graduate of Harvard College, and was at birth known by a