- Gadd, C. H. 1943b. Report of the Entomologist for 1942. Tea Research Institute of Ceylon. 2432-36.
- Gadd, C. H. 1941a. Observations on an attack by shot-hole borer on tea. Tea Quarterly 14132-146.
- Gadd, C. H. 1941b. The life history of the shot-hole borer of tea. Tea Quarterly 145-22.
- Gadd, C. H. 1942a. Report of the Entomologist for 1941. Tea Research Institute of Ceylon, Bulletin 2343-51.
- Gadd, C. H. 1942b. The effect of plucking on shot-hole borer attack in tea. Tea Quarterly 1531-40.
- Gadd, C. H. 1943a. Does manuring reduce the damage caused by shot-hole borer?. Tea Quarterly 1630-39.
- Gadd, C. H. 1943c. Shot-hole borer and wood rot. Tea Quarterly 166-9.
- Gadd, C. H. 1944a. A further note on an unusual correlation between insect damage and crop harvested. Annals of Applied Biology 31250-254.
- Gadd, C. H. 1944b. An unusual correlation between insect damage and crop harvested. Annals of Applied Biology 3147-51.
- Gadd, C. H. 1944d. Report of the Entomologist for 1944. Tea Research Institute of Ceylon, Bulletin 2631-37.
- Gadd, C. H. 1944e. Shot-hole borer damage and tea yields. Tea Quarterly 172-11, 2 figs..
- Gadd, C. H. 1946a. Report of the Entomologist for 1945. Tea Research Institute of Ceylon, Bulletin 2730-36.
- Gadd, C. H. 1946b. Studies of shot-hole borer of tea I, Distribution and nomenclature. Tea Quarterly 1846-54.
- Gadd, C. H. 1946c. Studies of shot-hole borer of tea II, Galleries. Tea Quarterly 18114-124, 1 pl..
- Gadd, C. H. 1947a. Observations on the life cycle of Xyleborus fornicatus Eichhoff in artificial culture. Annals of Applied Biology 34197-206.
- Gadd, C. H. 1947b. Studies of shot-hole borer of tea III, Damage to the tea bush. Tea Quarterly 1996-101.
- Gadd, C. H. 1949. Studies of shot-hole borer of tea (Xyleborus fornicatus) IV, Life cycle of the beetle V, Borer population. Tea Quarterly 2061-65, 66-76..
- Gadd, C. H., and N. K. Jardine. 1923. The control of shot-hole borer in tea by the use of general manures Preliminary Report (Xyl fornicatus). Tropical Agriculturalist 40299-304.
- Gadd, C. H., and F. P. Jepson. 1922. The effect of manures on the shothole borer of tea (Xyleborus fornicatus Eichh). Ceylon Department of Agriculture, Bulletin 561-30.
- Gadd, C. H., and C. A. Loos. 1947. The ambrosia fungus of Xyleborus fornicatus Eichh. British Mhycological Society, Transactions 3113-18, 1 pl..
- Jepson, F. P., and C. H. Gadd. 1922. The effects of manures on the shot hole borer of tea. Ceylon Department of Agriculture, Bulletin 5630 p..
- Jepson, F. P., and C. H. Gadd. 1925. The control of the shot-hole borer of tea. Ceylon Department of Agriculture, Bulletin 7246 p., 4 figs..
- Jepson, F. P., and C. H. Gadd. 1926. Manuring in relation to the control of shot-hole borer of tea. Ceylon Department of Agriculture, Bulletin 7849 p..
- Gadd, C. H. 1944c. Report of the Entomologist for 1943. Tea Research Institut of Ceylon, Bulletin 2532-37.
- Gadd, C. H. 1923a. The effect of certain manurial substances on shot-hole borer of tea. Tropical Agriculturalist 60:75-?
- Gadd, C. H. 1923b. The effect of certain manurial substances on shot-hole borer of tea . Ceylon Department of Agriculture, Yearbook 1923:9-11.