Encyclopedias, Almanacs, Transcripts, and Maps
- bontequagga
- Bonus Marchers
- book collecting
- book gill
- Book of Concord
- Booker T. Washington National Monument
- Boothia Peninsula
- Bootle
- Booz
- Bopp, Franz
- Bora, Katharina von
- boracic acid
- Borah, Mount
- Borås
- borax bead test
- Borchgrevink, Carsten Egeberg
- Bordaberry Arocena, Juan María
- Bordeaux mixture
- Borden, Sir Frederick William
- border collie