- Leach, J. G. 1940b. Insect transmission of plant diseases. McGraw-Hill Book Co., Inc., New York and London 615 p., illus. pp..
- Leach, J. G., A. C. Hodson, J. P. St. Chilton, and C. M. Christensen. 1940. Observations on two ambrosia beetles (Trypodendron betulae Sw and T retusum) and their associated fungi. Phytopathology 30227-236.
- Dorsey; Leach 1956
- Leach, J. G. 1938. Insects in relation to diseases of shade and forest trees . Journal of Economic Entomology 31:23-24.
- Leach, J. G. 1940a. Fungi associated with Scolytus multistriatus in regions where Ceratostomella ulmi has not been found . Phytopathology 30:15.
- Leach, J. G., A. C. Hodson, J. P. S. Chilton, and C. M. Christensen. 1940. Observations on two ambrosia beetles (Trypodendron betulae Sw and T retusum) and their associated fungi . Phytopathology 30:227-236.
- Leach, J. G., L. W. Orr, and C. Christensen. 1934. The interrelationships of bark beetles and blue-staining fungi in felled Norway pine timber. Journal of Agricultural Research 49:315-341, figs. 1-13.
- Leach, J. G., L. W. Orr, and C. Christensen. 1937. Further studies on the interrelationship of insects and fungi in the deterioration of felled Norway pine logs [Scolytidae, p 129, 130, 139] . Journal of Agricultural Research 55:129-140.
- True, R. P., H. L. Barnett, C. K. Dorsey, and J. G. Leach. 1960. Oak wilt in West Virginia. West Virginia University Agricultural Experiment Station, Bulletin 448T. iv + 119 p.
- Leach, A., J. Stonehouse, and P. Baker. 1999. A population and management model of the coffee berry borer, Hypothenemus hampei, to evaluate the returns of intergrated management strategies in Colombian coffee . Aspects of Applied Biology 53:173-180.