J. P. Morgan, Jr. in the context of "Harvard College"

The Morgan Library & Museum (originally known as the Pierpont Morgan Library and colloquially known as the Morgan) is a museum and research library in New York City, New York, U.S. Completed in 1906 as the private library of the banker J. P. Morgan, the institution is housed at 225 Madison Avenue in the Murray Hill neighborhood of Manhattan. As of 2024, the museum is directed by Colin B. Bailey and governed by a board of trustees.

The site was formerly occupied by several Phelps family residences, one of which was sold to J. P. Morgan in 1880. After collecting thousands of objects in the late 19th century, Morgan erected the main library building between 1902 and 1906, with Belle da Costa Greene serving as its first librarian for more than four decades. The library was made a public institution in 1924 by J. P. Morgan's son John Pierpont Morgan Jr., in accordance with his father's will, and further expansions were completed in 1928, 1962, and 1991. The Morgan Library was renamed the Morgan Library & Museum after the completion of a major expansion in 2006. Further renovations were completed in 2010 and 2022.

Belle da Costa Greene (November 26, 1879 – May 10, 1950) was an American librarian who managed and developed the personal library of J. P. Morgan. After Morgan died in 1913, Greene continued as librarian for his son, Jack Morgan, and in 1924 was named the first director of the Pierpont Morgan Library. Despite being born to black parents, Greene spent her professional career passing for white.

Greene worked in the administrative offices at Columbia University's Teachers College in the mid-1890s, where she was introduced to the philanthropist and social welfare advocate Grace Hoadley Dodge. Dodge arranged for Greene to be admitted to the Northfield Seminary for Young Ladies and funded her education there. Greene attended the seminary for three years, likely from 1896 to 1899. In 1900, Greene attended Amherst College's Summer School of Library Economy, a six-week program that offered courses in the nascent library science field, including cataloging, indexing, and handwriting. Following her graduation, she began working at the Princeton University Library. At Princeton, she was trained in cataloging and reference work, and she developed a knowledge of rare books. While working at Princeton, she met Junius Spencer Morgan II, who later introduced her to his financier uncle J. P. Morgan. Greene began working as J. P. Morgan's librarian in 1905.

The Morgan Library & Museum (formerly the Pierpont Morgan Library; colloquially the Morgan) is a museum and research library in New York City, New York, United States. Completed in 1906 as the private library of the banker J. P. Morgan, the institution is housed at 225 Madison Avenue in the Murray Hill neighborhood of Manhattan. As of 2024, the museum is directed by Colin B. Bailey and governed by a board of trustees.

The site was formerly occupied by several Phelps family residences, one of which was sold to J. P. Morgan in 1880. After collecting thousands of objects in the late 19th century, Morgan erected the main building between 1902 and 1906, with Belle da Costa Greene serving as its first librarian for more than four decades. The library was made a public institution in 1924 by J. P. Morgan's son John Pierpont Morgan Jr., in accordance with his father's will, and further expansions were completed in 1928, 1962, and 1991. The Morgan Library was renamed the Morgan Library & Museum after the completion of a major expansion in 2006. Further renovations were completed in 2010 and 2022.