his death in 1943; his wife had died in 1925. Subsequently, the United Lutheran Church in America bought that house for its headquarters, and built a five-story annex in 1957. Next door, the Pierpont Morgan Library continued to expand its collections. The Fellows of The Pierpont Morgan Library was formed in 1949 to raise funds for the collections and distribute funds to scholars and publications. In the following decade, the Pierpont Morgan Library started to host concerts and tours. In 1960, the main library and its annex were connected by a cloister structure. The renovation, designed by J. P. Morgan's nephew Alexander P. Morgan, was completed in 1962 and included office space, a gallery, and meeting space. The Phelps Stokes/Morgan house was designated by the New York City Landmarks Preservation Commission (LPC) in 1965 as one of the first structures to be protected under New York City's Landmarks Law. Next door, the LPC designated the exterior of the library's main building as a city landmark in 1966, and that structure was declared a National Historic Landmark the same year. However, the Lutheran Church had hoped to erect an office structure on the site of the Phelps Stokes/Morgan house and heavily opposed the house's designation. As a result, in 1974, the landmark status was removed from that house following a New York Court of Appeals ruling. The Pierpont Morgan Library constructed a five-story, addition to the annex in 1975 to plans by Platt, Wyckoff & Coles; the addition was intended to house storage vaults and offices. In 1982, the main library building's interior was designated a city landmark. Late 20th century to present In 1988, the Pierpont Morgan Library bought 231 Madison Avenue from the Lutheran Church. The garden between the house and the main building's annex was redeveloped with a glass conservatory designed by Voorsanger and Mills. The conservatory, the first major expansion to the Pierpont Morgan Library since the completion of Morris's annex, was finished in 1991 and connected the two structures. The house became the Pierpont Morgan Library's bookstore. In 1999, the Morgan opened a drawing center on the second floor of the annex, designed by Beyer Blinder Belle. The same year, the Morgan received $10 million from Eugene V. Thaw and Clare E. Thaw; these funds were used to establish the Thaw Conservation Center in 2002. By 2001, there were plans to expand the Pierpont Morgan Library.