found: The first quarter century of the Pierpont Morgan Library, 1949: t.p. (Belle da Costa Greene)
found: LC in RLIN, 09/22/97 (hdg.: Greene, Belle da Costa)
found: Studies in art and literature for Belle da Costa Greene, 1954: p. ix (d. May 10, 1950)
found: Morgan : American financier, 1999: p. 512 (Belle da Costa Greene; Belle Marion Greener; b. Washington, D.C., Nov. 26, 1879; daughter of Genevieve Fleet and Richard Theodore Greener, the first black man to graduate from Harvard)
found: New York Times, May 12, 1950: p. 27 (Belle D. Greene; d. in New York City; librarian in charge of J. Pierpont Morgan's library from 1905 until 1924; director of the Pierpont Morgan Library from 1924 until 1948; retired Dec. 1, 1948)