- Austin Herald Free Electric Cooking School (1925 : Austin, Minn.) (1)
- Baldwin-Whitten-Ackerman Nurseries (1)
- Beatrice Nursery & Sonderegger Seed (1)
- Boyd, W. H (1)
- British Columbia. Department of Lands (1)
- Brockman, W. W. (1)
- Brooks, Alfred H. (Alfred Hulse), 1871-1924 (1)
- Burgess, J. S. (1)
- C.M. Co (1)
- Campbell Printing Company (1)
- Campbell, Frank W. (1)
- Canada. Natural Resources Intelligence Service (1)
- Canada. Topographical Survey (1)
- Celery City Nurseries (1)
- Chase, Ray P. (Ray Park), 1880-1948 (1)
- Clark, J. C. (1)
- Cline, W. W. (1)
- Coleman, Robert H. (Robert Henry), 1869-1946 (1)
- Cowles, S. M. (1)
- Currie Brothers Co. (1)
