Thomas Durant Visser, Professor in the Department of History at the University of Vermont, has taught courses at UVM since 1985 on such topics as historic preservation planning and policy, researching historic buildings and sites, architectural conservation, history of American building technology, and other topics. 

As a recipient of a National Endowment for the Arts grant award, much of Professor Visser's scholarly research has focused on the preservation of vernacular buildings. His award-winning book, Field Guide to New England Barns and Farm Buildings was published by the University Press of New England. His latest book, Porches of North America, examines how this liminal building feature in its many forms and uses has evolved in the United States and Canada.

In addition to completing nearly two hundred professional reports, projects, and nominations to the National Register of Historic Places, Visser's articles and works have been published in such journals as the Bulletin of the Association for Preservation Technology, Preservation Education & Research, Vermont History, and New England Quarterly. He also leads professional workshops and speaks regularly to organizations and groups on a variety of community preservation topics.