- Alden, William C. (William Clinton), 1871-1959 (1)
- American Geographical Society of New York (5)
- Arnold, Roger D. (1)
- Bailey, Pearl La Verne,1884- (1)
- Bairnsfather, Bruce, 1887-1959 (1)
- Baker Art Gallery (Photographer) (1)
- Baldridge, Cyrus Leroy, 1889-1975 (3)
- Baldridge, Cyrus Leroy, 1889-1977 (2)
- Barnett, Eugene E. (1)
- Barrecchia, B (1)
- Barteldes Seeds (1)
- Baum, L. Frank (author) (1)
- Beatrice Nursery & Sonderegger Seed (1)
- Beckquist Photo Supply Company (Photographer) (1)
- Bell Museum of Natural History (14)
- Bell, Charles, 1935-1995 (1)
- Beneker, Gerrit Albertus, 1882-1934 (1)
- Blashfield, Edwin Howland, 1848-1936 (1)
- Bonestell, Chesley, 1888-1986 (1)
- Bostwick, Louis R. (Photographer) (1)
