- 1 Barlow, Samuel L. M. (Samuel Latham Mitchill) 1826-1889
- 1 Barlow's Mill
- 1 Barnabas, Apostle, Saint
- 43 Barnaby Rudge
- 1 Barnard, Bishop & Barnard
- 2 Barnes, David
- 1 Barnett, Morris, 1800-1856
- 21 Barns
- 1 Baron von Mering Boutteville (Firm)
- 1 Baron-Wilson, Cornwell, Mrs., 1797-1846
- 3 Barracks
- 3 Barrel organs
- 1 Barreling
- 115 Barrels
- 1 Barren Hill, Pennsylvania
- 1 Barricades
- 1 Barrow, John Wylie, 1828-1885
- 1 Barrows, Savery & Co. Iron Foundary
- 2 Barry & Boyd Soap & Candle Works
- 1 Barry, David Sheldon, Sr., 1859–1936
- 6 Barry, John, 1745-1803
- 45 Bars
- 6 Bars (Furniture)
- 1 Barstools
- 2 Bartenders
- 14 Bartholdi, Frederic Auguste, 1834-1904.
- 8 Bartholdi's Fountain (Sculpture)
- 5 Bartholomew, Apostle, Saint
- 1 Barton, J. Rhea (John Rhea), 1794-1871
- 1 Barton's Cotton Factory
- 10 Bartram Gardens
- 1 Baruch ben Neriah
- 10 Bary, Alexander B.
- 16 Barzaghi, Francesco
- 14 Baseball (field sport)
- 1 Baseball bats
- 8 Baseball fields
- 3 Baseball players
- 2 Baseballs (ball)
- 3 Basements
