- Westgate, J. M., and F. M. Hillman. 1922. Red clover. United States Department of Agriculture, Farmers Bulletin 455.
- Williams, N. E., J. A. Westgate, D. D. Williams, A. Morgan, and A. V. Morgan. 1981. Invertebrate fossils (Insecta: Trichoptera, Diptera, Coleoptera) from the Pleistocene Scarborough Formation at Toronto, Ontario, and their paleoenvironmental significance . Quaternary Research 16:146-166.