- Babcock Plan (1)
- Babylonia Maps (1)
- Badong Xian (Hubei) History Sources (3)
- Baker, Robert Harter (1)
- Balkan Peninsula Maps Early Works to 1800 (3)
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- Balsam Creek (1)
- Baltic Sea Commerce Early Works to 1800 (158)
- Baltic Sea Maps (2)
- Baltimore and Ohio Railroad Company (1)
- Bangladesh (5)
- Bangladesh Maps (18)
- Bangladesh Maps Early Works to 1800 (10)
- Bangor and Aroostook Railroad Company (1)
- Banks and Banking (2)
- Baoying (Jiangsu) History Sources (3)
- Baoying Xian (Jiangsu) History Sources (5)
- Bar Harbor (Me.) Maps (1)
- Barnhart, Byron Pat (1)
- Bars (Drinking Establishments) (2)
