In 1910 he received an A.M. degree in biology from Harvard University. From 1909 to 1914, Timberlake was employed by the U.S. Department of Agriculture Bureau of Entomology, as "Agent and Expert" conducting research in biological control of pest insects.
In 1910, he earned an A.M. degree in biology from Harvard University. From 1909 to 1914, Timberlake worked for the U.S. Department of Agriculture Bureau of Entomology as "Agent and Expert," conducting research on biological control of pest insects.