C. Scott Cooper, Hubbert, F., Hyder, D. Nelson, Sawyer, W. A., and Sneva, F. A.,
“The Stockman's Laboratory -- Field Day Report”, Squaw Butte-Harney Range and Livestock Experiment Station, 1953.
D. Nelson Hyder, Sneva, F. A., and Sawyer, W. A.,
“Soil Firming May Improve Range Seeding Operations”,
Journal of Range Management, vol. 8, no. 4, p. 159, 1955.