- Blucher, Walter H. 1901-1
- Blum's Commercial Map Publishing Company1
- Blum, Max L1
- Blumenthal, W. Michael, 1926-1
- Blunt, Edmund M. 1770-18621
- Board of General Managers of the Exhibit of the State of New York at the World's Columbian Exposition1
- Board of Governors of the Federal Reserve System (U.S.)1
- Bockman, Eugene J1
- Bodenheim, Maxwell, 1893-19541
- Bodmer, Karl, 1809-18931
- Bogard, Milo T1
- Bogardus, Nathaniel1
- Boggs, Kenneth L1
- Boldt, George C., 1851-19161
- Bolton, Cornelius Winter, 1819-19061
- Bolton, Reginald Pelham, 1856-19427
- Bolton, Robert, 1814-18771
- Bolton, Theodore, 1889-19731
- Book Manufacturers' Institute (U.S.)1
- Booth, Ballington, 1857-19401
- Borden & Cain Press1
- Bormay & Co1
- Boston (Mass.). Mayor's Task Force on Urban Theatres1
- Boswell, John, 1945-1
- Botein, Bernard1
- Boucicault, Dion, 1820-18901
- Boughton, Willis, 1854-19421
- Bourne, Wm. Oland 1819-19011
- Boutillier Brothers1
- Bowen & Co1
- Bowen, Clarence Winthrop, 1852-19352
- Bowery Savings Bank of New York1
- Bowman, John McE., 1875-19311
- Boyd, William H1
- Boydell, John, 1720-18041
- Boyer, R. L1
- Boys' Club of New York1
- Brace, Charles Loring, 1826-18901
- Bradford, William, 1663-17523
- Bradish, Luther, 1783-18631
- Bradley, David L1
- Brady, Katherine Lydig1
- Bragg, Whittemore & Massey (Firm)1
- Brainerd, Cephas, 1831-19101
- Braislin, William C. 1865-19481
- Brand Names Foundation1
- Brandt, Lilian, 1873-1
- Brazil1
- Brearley, Harry Chase, 1870-19401
- Breen, Matthew P1
- Brennan, Alfred, 1853-19211
- Brette, John2
- Brevoort, Henry, 1782-18481
- Brevoort, James Carson, 1818-18871
- Brewer and Tileston1
- Brewer, A. R1
- Brick Presbyterian Church (New York, N.Y.)1
- Bridgehead Books1
- Bridges, William1
- Bridges, William, -18141