| 115th Street Branch Records, 1908-2000 |
| 125th Street Branch Records, 1904-2000 |
| 67th Street Branch Records, 1905-1993 |
| 96th Street Branch Records, 1905-1995 |
| A'Becket Family Diaries and Prompt Books, 1840-1890 |
| Abbey Theatre Records, 1910-1938 |
| Abdoh (Reza) Collection of Papers, 1983-1995 |
| Abel (Walter) Papers, 1900-1976 |
| Abercrombie (Lascelles) collection of papers, 1911-1939 |
| Ackerley (Joe Randolph) collection of papers, 1919-1969 |
| Adair (Jean) Papers, 1914-1929 |
| Adams (Benjamin) Records, 1909-1918 |
| Adams (Maude) Collection, 1879-1956 |
| Adams (Thomas Boylston) Journal, 1798 |
| Adele Theatre records, 1919-1922. |
| Adventures of Frank Merriwell Collection, 1946-1947 |
| Affelder (Paul) Papers, 1930-1975 |
| Agee (James) collection of papers, 1933-[1952] |
| Agnew (George Bliss) papers, 1882-1925 |
| Aguilar Branch Records, 1912-1996 |
| AIDS Activist Videotape Collection, 1983-2000 |
| AIDS and Adolescents Network of New York Records, 1987-1999 |
| AIDS Theatre Project Records, 1987-2003 |
| Aiken (Conrad) collection of papers, 1913-1963 |
| Ainsworth (William Harrison) collection of papers, [1836]-1889 |
| Albee (Edward) Papers, ca. 1945-1964 |
| Albee (Edward) Scripts |
| Alcott (Louisa May) collection of papers, 1865-1884 |
| Aldington (Richard) collection of papers, 1914-1962 |
| Alf (Fe) Papers, c.1928-c.1933. |
| Alfange (Dean) Papers, 1927-1988 |
| Allerton Branch Records, 1956-1996 |
| Alum (Manuel) Papers, c.1970-1991. |
| AMAS Musical Theatre Production Files, 1978-1992 |
| American Association for Health, Physical Education, and Recreation Records, 1931-1968 |
| American Ballet Theatre Records, 1936-(ca. 1967). |
| American Ballet Theatre Scrapbooks, 1939-1966 |
| American Broadsides Collection |
| American Negro Theatre Records, 1940-1949, 1981 |
| American Negro Theatre Scrapbook, 1945-1947 |
| American Play Company Records, 1924-1934 |
| American Scenic and Historic Preservation Society Records, 1895-1971 |
| American Stage Design slides, 1850-1950 |
| Ames (Winthrop) Papers, 1908-1931 |
| Anderson (Edwin Hatfield) Records, 1913-1934 |
| Anderson (Margaret C.) collection of papers, [1918-1973] |
| Anderson (Maxwell) collection of papers, 1925-1926 |
| Anderson (Sherwood) collection of papers, 1922-1943 |
| Andrew Heiskell Braille and Talking Book Library Records Records, 1912-1996 |
| Andrews (Ann) Papers, 1918-1963 |
| Anglin (Florence) Papers, 1938-2002 |
| Ansen (Alan) collection of papers, 1942-1953 |
| Anspacher (Louis K.) Papers, 1903-1960 |
| Anspacher (Louis Kaufman) collection of papers, 1912-1924 |
| Anthony (Michael) Papers, 1957-1984 |
| Antoon (A.J.) Papers |
| Appleton (William) Collection of Theatrical Correspondence and Ephemera, 1697-1930 |
| Arden-Peerless Papers, 1886-1910 |
| Arlen (Michael) collection of papers, 1921-[1953] |
| Arnold (Matthew) collection of papers, 1857-1888 |
| Arnstein (Arnold) Collection, [ca. 1950-1989] |
| Aronson (Boris) Papers and Designs, 1923-2000 |
| Asbury United Methodist Church Records, 1836-1986 |
| Ashmore (Grace Eulalie Matthews) Papers, 1896-1972 |
| Astor Library Records, 1839-1911 |
| Astruc (Gabriel) Papers |
| Atherton (Gertrude Franklin Horn) collection of papers, 1893-1925 |
| Atkinson (Brooks) Papers |
| Atlas (James) collection of papers, [1976]-1997 |
| Auden (W. H.) collection of papers, 1809-1979 bulk (1927-1973) |
| Auerbach (Alfred) Letters received by, Sept. 8 - Dec. 13, 1912 |
| Austen (Roger) Papers, 1977-1984 |
| Avshalomov (Jacob) Scores, 1928-2001 |
| Bakeless (John Edwin) Papers, 1913-1977 |
| Balbo (Giuseppe Cesare) Papers, 1903-1956 |
| Balderston (John L.) Papers, 1915-1950 |
| Baldwin (Samuel) Scores, [ca. 1880-1942] |
| Ballet Foundation. Collection of Orchestral Scores and Parts. |
| Ballet International Records, 1915-1952 |
| Baral (Robert) Papers, 1876-1980 |
| Barber (Charles) Dance Writings, 1984-1992. |
| Barham (Richard Harris) collection of papers, [1798?]-1930 bulk ([1827?]-1845) |
| Barker (Barbara) Papers, ca. 1833-1998 |
| Barker (Margaret) Papers, ca. 1800s-1989 |
| Barnes (Kay) Papers, 1903-1972 |
| Barr (Richard) - Clinton Wilder Papers, 1935-1982 |
| Barrus (Clara) Papers, 1906-1931 |
| Barstow (Richard and Edith) Papers, ca. 1907-1980 |
| Barstow (Richard) Papers, 1927-1977 and Undated; (Bulk Dates 1940-1977) |
| Bartholdi (Frederic Auguste) papers, 1871 |
| Basch (Buddy) Joke Files |
| Baum (Morton) Records of the New York City Center, ca. 1948-1968. |
| Bauman (Mordecai) Papers, 1930-1952 |
| Bay (Howard) Designs and Technical Drawings, 1934-1985 |
| Beach (John Parsons) scores |
| Beals (Ralph A.) Records, 1946-1954 |
| Beam (Joseph F.) Papers, 1967-1990 |
| Bearden (Bessye B.) Papers, 1922-1944 |
| Bearden (Romare) Papers, 1933-1979 |
| Beardsley (Aubrey) collection of papers, [1893]-1898 |
| Becker (John J.) Papers, 1897-1991 |
| Beerbohm (Max) collection of papers, 1878-1964 bulk (1909-1957) |
| Behrman (S. N.) Papers, 1912-1987 |
| Belasco (David) Papers, 1868-1967 |
| Bell Telephone Hour Collection of Sound Recordings, 1940-1968 |
| Belloc (Hilaire) collection of papers, 1897-1950 |
| Belmont Branch Records, 1982-1992 |
| Bendiner (Alfred) Caricatures and Related Papers, 1929-1992 |
| Bennett (Arnold) collection of papers, 1881-1955 bulk (1894-1953) |
| Bennett (George W.) Manuscript |
| Bennett (Gwendolyn) Papers, 1916-1981 |
| Bennett (Isadora) Collection, 1940-72 |
| Bennett (Isadora) Papers, 1945-1966 |
| Benney (Robert) Original Drawings, 1926-1942 |
| Benney (Robert) Research Materials, 1926-1978 |
| Berezowsky (Nicolai) Scores, [ca. 1916 - ca. 1953] |
| Berg (Copy) Papers, 1890s-1998 |
| Berger (Arthur) Papers, 1905-2004 (bulk dates 1930-2003) |
| Berk (Fred) Papers, 1911-1980. |
| Berkowitz (Gerald) Transcripts of New Broadways Interviews, 1995-1996 |
| Berlin (Irving) Collection of Noncommercial Sound Recordings, 1933-1989 |
| Berman (Eugene) Stravinsky Festival Correspondence, 1971-72 |
| Berne (Mildred) Portraits, ca. 1927-1939 |
| Berry (Isaac Reed) Papers, 1931-1975 |
| Berry (Llewellyn L.) Collection, 1900-1954 |
| Bert Bertram Scrapbooks, 1915-1984 |
| Besoyan (Rick) Papers, 1940-1986 |
| Bettis (Valerie) Papers, ca. 1942-1982 |
| Beyer (Johanna Magdalena) scores, [1931-1943] |
| Billings (John Shaw) Records, 1885-1915 |
| Bingham (Seth) Scores, 1920 - 1953 |
| Binns (L.J.) Caricatures |
| Biscardi (Chester) Papers, 1985 - 1987 |
| Black (Joseph) Papers, 1961-1977 |
| Black Academy of Arts and Letters (Records), 1968-1980 |
| Black Nativity files, 1961-1980 |
| Black Panther Party. Harlem Branch Collection, 1970, n.d. |
| Blacks in the Railroad Industry Collection, 1946-1954 |
| Blakely (David) Papers, 1880-1931 |
| Bliss (Anthony A.) Papers |
| Bloomingdale Branch Records, 1899-1986 |
| Bluestime Power Hour, 1997-1998 |
| Boatner (Edward) Papers, 1941-1980 |
| Bohnen (Roman) Papers, 1918-1976 |
| Bolm (Adolph) Collection, ca. 1922-1983. |
| Bond Street Branch Records, 1899-1918 |
| Bonfanti (Maria) Papers, 1868-1917 |
| Bonfanti (Marie) Collection |
| Boniface and Jones Family Papers, 1828-1902 |
| Books & Co. Records, 1978-1997 |
| Booth-Grossman Family Papers, 1840-1953 |
| Bostwick (Elmore) Records, 1901-1909 |
| Bosworth (Patricia) Papers, 1932 - 1984 and Undated (Bulk Dates 1948 - 1980) |
| Boultenhouse (Charles) and Parker Tyler Papers, 1927-1994 |
| Bournonville Family Correspondence in the Kongelige Bibliotek, Kobenhavn |
| Bowman (Betty) Ephemera |
| Boyle (Kay) collection of papers, 1925-1988 bulk (1952-1986) |
| Bragg (George Freeman) Manuscripts |
| Brainard (Ingrid) Papers, 1890 - 2000 |
| Braithwaite (William Stanley) Papers, 1902-1976 |
| Braun (Edith Evans) Collection, 1916-1971 |
| Brent (Romney) Papers, 1934-1975 |
| Briggs (Alanson T.) Records, 1901-1913 (bulk 1901-1910) |
| Brinker (Una Abell) Papers, 1895-1952 |
| Brisson (Frederick) Papers, 1934-1984 |
| Bromberg (J. Edward) Papers, 1924-1951 |
| Brontė (Emily) collection of papers, 1832-1848 |
| Brooke (Rupert) collection of papers, [1905]-[1937] bulk (1912-1929). |
| Brown (Egbert Ethelred) Papers, 1908-1964 |
| Brown (Thomas P.) Papers, 1934-1982 |
| Browne (Robert S.) Papers, 1957-1995 |
| Browning (Elizabeth Barrett) collection of papers, 1764-[1973] bulk (1812-1883). |
| Browning (Robert) collection of papers, [1835?]-1933 bulk ([1835?]-1889) |
| Bryant (Nana) Papers, 1917-1955 |
| Buchman (Herman), 1939-1990 |
| Bunche (Ralph J.) Papers, 1922-1988 |
| Bunton (Henry C.) Papers, 1871-1989 |
| Burgess Family Papers, 1794-1929 |
| Burke (Kenneth) collection of papers, 1922-1983 bulk (1922-1973). |
| Burney (Frances) d'Arblay collection of papers, 1653-1894 bulk (1775-1839) |
| Burns (Eileen) Papers, 1928-1994 |
| Burnside (R.H.) Papers, 1893-1949 |
| Burrows (Abe) Collection, 1946-1972 |
| Burrows (Abe) Papers, 1904-1993 |
| Butler (John) Papers, 1918-1992 |
| Byron (Baron), George Gordon Byron collection of papers, 1805-1969 bulk (1805-1922). |
| Caccialanza (Gisella) Collection, ca. 1926-1972 |
| Campbell (Patton) Designs, 1948-1995 |
| Capote (Truman) Papers, c. 1924-1984 |
| Captain Kangaroo Scripts, 1959-1964 |
| Carle (Richard) papers, 1900-1941. |
| Carrington (Elaine) Papers, 1903-1959 |
| Carrington (Glenn) Papers, 1921-1971 |
| Casselman (William A.) Papers, 1925-2000 |
| Castle Hill Branch Records, 1961-1987 |
| Catalog Preservation Project Records, 1942-1983 |
| Caubaye (Suzanne) Papers, 1919-1979 |
| Central Circulation Branch Records, 1911-1970 |
| Century Company Records, 1871-1924 |
| Cetra-Soria Collection, 1946-1954 |
| Chamberlain and Lyman Brown Theater Diaries, 1909 - 1914 |
| Chamie (Tatiana) Papers, 1926-1950 |
| Champlain (Helene) Papers, 1932-1969 |
| Chase (Gilbert) Papers, 1920 - 1992 |
| Chase (Lucia) Papers, ca. 1899 - 1982 |
| Chatham Square Branch Records, 1899-2001 |
| Chavez (Carlos) Correspondence and Scores, [1907-1979] |
| Chayefsky (Paddy) Papers, 1907-1998 [Bulk dates 1952-1981] |
| Cheever (John)collection of papers, 1942-1982 |
| Cheshire (John) Papers, 1853 - 1945 and undated |
| Chesnokov (Alexander) Papers, 1899-1962 |
| Chesson (Wilfrid Hugh) collection of papers, 1893-1946 |
| Chesterton (Gilbert Keith) collection of papers, [1895?]-1935 |
| Chicago Allied Arts, Inc. Records, 1922-1929 |
| Churchill (Sir Winston) collection of papers, [1898?]-1954 bulk (1910-1954) |
| Chute (Susan) Papers, 1985-1996 |
| Circle Repertory Company Records, 1965-1996 |
| City Club of New York Records, 1896-1925 |
| City Island Branch Records, 1970-1995 |
| City Symphony Orchestra of New York Records, 1927-1971 |
| Claflin (Avery) Collection |
| Claflin (Avery) Scores, 1929 - 1979 |
| Clarke (Catherine) Civil Rights Collection, 1936-1969 (bulk 1966-1969) |
| Clemens (Samuel Langhorne) collection of papers, 1856-1938 bulk (1870-1938) |
| Clift (Montgomery) Papers, 1933-1966 |
| Clipping Files (Subjects), [ca. 1895-] |
| Clurman (Harold) Papers |
| Coalition of Black Trade Unionists Collection, 1972-1988 |
| Cockran (William Bourke) Papers, 1881-1924 |
| Code (Grant Hyde) Papers, 1936-1941 |
| Cohen (Alexander H.) Papers, 1880, [Bulk Dates ca. 1938 - 2003] |
| Cohen (Selma Jeanne) International Encyclopedia of Dance Records, 1964-1995 |
| Cohen (Selma Jeanne) Papers Relating to Dance Perspectives, 1959-1976 |
| Cohen (Selma Jeanne) Papers Relating to Teaching and Critical Writing Projects, 1965-1973 |
| Cohen (Selma Jeanne) Papers, 1942-1993 |
| Cohn (Fannia) Papers, 1914-1962 |
| Coleridge (Samuel Taylor) collection of papers, |