,
Flags on Fifty-Seventh Street, oil on canvas, 1918, in the New York Historical's collection The Historical Society's collection continued to grow throughout the 20th century, but renewed financial woes in the 1970s and 1980s forced the Historical Society to limit access to its collections to professional researchers. In the 1980s, under the leadership of
Herbert S. Winokur, Jr., a private equity financier and
Enron board member, the Society was forced to use
endowment invasion to pay their annual operating costs and cover their salaries, to the point where by 1988, they had only enough money in their endowment to pay for another 18 months of operating expenses.
Barbara Knowles Debs from
Manhattanville College was named interim director of the Historical Society. In the same year hundreds of paintings, decorative art objects, and other artifacts, which were stored in a Manhattan warehouse, were found to be critically deteriorating. Many of the objects were on long-term loan to the museum. In 1995, grants from the city and state restored public access under the direction of
Betsy Gotbaum. Since the late 1990s, the New York Historical has invested significantly in facility and installation upgrades, and conducted fundraising. It has increased its operating budget by 160 percent to enhance and expand its public programs, while maintaining a balanced budget from 1998 to the present. Recent renovations to the Historical Society include new galleries and exhibition spaces, the Henry Luce III Center for the Study of American Culture, a state-of-the-art library reading room, and a new facility to house and provide access to the letters and manuscripts of the
Gilder Lehrman Institute of American History. In 2005, the Historical Society was among 406 New York City arts and social service institutions to receive part of a $20 million grant from the
Carnegie Corporation, which was made possible through a donation by New York City mayor
Michael Bloomberg. The museum has mounted exhibits on national themes through history in New York. For instance, beginning in 2005 with
Slavery and the Making of New York, 1600s–1827, it mounted the first exhibition ever in New York City on the major but little-known role of slavery in the city's economy and history. During the colonial years, 41% of households had slaves, and much of the city's economy through the Civil War was related to the South and slavery; half of its exports were related to cotton. Devoting the entire first floor to the exhibit, the museum mounted the largest theme exhibit in its 200-year history. It also addressed the strengths of African Americans who resisted slavery and created their own culture, both in New York and the nation. A related part of the exhibit was commissioning 20 new works by invited artists, some of whom used objects from the museum's collections to create new works and installations on this theme. The second exhibition was
New York Divided: Slavery and the Civil War, 1827–1865, (November 17, 2006 to September 3, 2007), which explored the economy before the war and strong business ties to the South, events related to the war such as the
New York City Draft Riots, and other aspects. Southerners visited New York so frequently in the antebellum era that they had favorite hotels. Under the direction of Louise Mirrer, a three-year, $65 million renovation of the landmark building on Central Park West was completed in 2011 to enhance public access to the institution's resources. On Central Park West, windows were lengthened to form new entrances, with views into the main gallery, and windows were expanded. To establish "a street presence," the society has installed life-size bronze sculptures outside the building—
Abraham Lincoln on Central Park West,
Frederick Douglass on West 77th Street—national figures with connections to New York. In 2023, the New York Historical Society began constructing the Tang Wing, designed by
Robert A. M. Stern. The wing will contain collections on LGBTQ+ history. Construction topped out in May 2025, and the wing was expected to open in June 2026. ==Branding==