- 3 Boston Harbor
- 2 Boston Massacre, 1770
- 1 Boston Public Gardens
- 1 Boston Public Library
- 52 Boston, Massachusetts
- 7 Botanic Avenue
- 13 Botanical illustrations
- 3 Botanists
- 2 Botany
- 1 Bottinelli, Antonio
- 1 Bottle feeding
- 46 Bottles
- 6 Bottling plants
- 1 Boucher, François, 1703-1770
- 2 Boucheron (Firm)
- 2 Boucicault, Dion, 1820-1890
- 6 Boulders
- 4 Boulevards
- 10 Boulogne, France
- 1 Boulton, Joseph & Son (Hosiery)
- 2 Bouquets
- 1 Bourke, John William, b. ?1807
- 1 Bourses see Exchanges (financial institutions)
- 1 Bouve Crawford & Co. Corporation Makers of the Crawford Shoe
- 7 Bouvier Street
- 2 Bow River
- 1 Bow ties
- 1 Bower, Henry Chemical Works
- 1 Bowler hats
- 6 Bowlers (people)
- 6 Bowling
- 6 Bowling alleys
- 15 Bowls (Tableware)
- 2 Bowness, England
- 4 Bowring, John, 1792-1872
- 17 Bows (Archery)
- 1 Bow-street
- 4 Box industry
- 1 Box offices
- 1 Boxall, William, Sir, 1800-1879
