The Boatman: Henry David Thoreau’s River Years – Biography, environmental history, science, and law (Harvard, 2017).
Walden’s Shore: Henry David Thoreau and Nineteenth Century Science – Scholarly literary criticism (Harvard, 2014).
Beyond Walden: The Hidden History of America’s Kettle Lakes – From Walden to Wobegon (Bloomsbury. 2009).
Exploring Stone Walls: A Field Guide to New England’s Stone Walls – Outdoor fun for all ages (Walker. 2005).
Stone by Stone: The Magnificent History in New England’s Stone Walls – Winner of the 2004 Connecticut Book Award (Walker, 2003).
Stone Wall Secrets By Kristine and Robert Thorson – A Smithsonian Notable Book for Children (Tilbury House, 1998).
Image: Covers of six books.