Collections: Shade Tree Lab

Shortly after earning his doctorate in plant pathology from Cornell in 1954, the internationally known phytopathologist, Francis W. Holmes began his career at UMass Amherst. Working in the Department of Plant Pathology (1954-1991) and later as Director of the Shade Tree Laboratories, Holmes became a leader in the study of Dutch elm disease, and he conducted important research on injury to trees from road salt and the relationship between salt injury and Verticillium wilt disease. During Holmes’s tenure, the Shade Tree Labs tested nearly 250,000 elm samples for Dutch elm disease and diagnosed a great variety of other diseases on more than 150 other types of trees. While on a Fulbright fellowship in the Netherlands, he devoted his free time to preparing a monograph on six Dutch women scientists who discovered the source of Dutch elm disease in the 1920s and 1930s. Holmes retired from the University in 1991 and remained in Amherst until his death in 2007.

The papers document Holmes’s research on shade trees and his tenure as a professor of microbiology. The collection includes some professional correspondence (1954-1977), awards, research notes and publications, and memorabilia. Holmes’s translations of phytopathological works from Dutch to English may be of interest to scholars of Dutch elm disease.

Forest pathologist and arboriculturist Malcolm Arthur McKenzie was born in Providence, Rhode Island in April 1903. After attending Brown University (PhD Forest Pathology, 1935), he worked successively as a field assistant for the United States Forest Service forest products lab, as an instructor at the University of North Carolina, and finally with the University of Massachusetts Shade Tree Laboratory. He conducted important research on the diseases of shade trees, including Dutch elm disease, wood decay, and tree pests, as well as related issues in tree hazards in public utility work and municipal tree maintenance.

The McKenzie Papers document McKenzie’s association with the UMass Shade Tree Lab, along with some professional correspondence, research notes and publications, and McKenzie’s dissertation on willows.