- Hool, George A. (George Albert), 1883- (11)
- Kinne, W. S. (William Spaulding) (5)
- Zipprodt, R. R. (Roy Richard), 1890- (3)
- Bowen, S. W. (1)
- Hollister, S. C. (1)
- Janni, A. C. (1)
- Johnson, Nathan C. (1)
- Johnson, Nathan Clarke (1)
- Kilcawley, E. J. (Edward James), 1893- (1)
- Langley, H. E. (1)
- Pulver, Harry E. (1)
- Ransome, A. W. (1)
- University of Wisconsin. University Extension Division (1)