1980 Walnut Blight Control Studies Olson, Bill, Larry Fitch, Beth Teviotdale, Peter Lindgren, Wilbur Reil, Dennis Harper. 1980.
1978 Deep Bark Canker Teviotdale, B.L., M.N. Schroth, S. Sibbett, P. LaVine, W. Schreader, L. Fitch, L. Hendricks. 1978.