Creator
- Brady Laboratory of Pathology and Bacteriology1
- Brady, St. Elmo, 1884-19661
- Brannt, William T. (William Theodore), 1844-1
- Braun, Emil2
- Breskin & Charleton Publication Corp.1
- Brock, Alan St. H. (Alan St. Hill), 1886-1
- Brownlee, Raymond B. (Raymond Bedell), 1877-19541
- Buckley, Arabella B. (Arabella Burton), 1840-19292
- Bunsen, R. (Robert), 1811-18991
- Burroughs Wellcome and Company1
- Burton, Frank S.1
- Bush, William Ernest, 1861-19031
- Butler & Tanner1
- Cain, John Cannell1
- California Cap Co.1
- Campbell, George A.1
- Canadian Government Printing Bureau1
- Carnegie Institution of Washington1
- Cassell & Company1
- Cassella Color Company1