Peter Wohlleben, The Hidden Life of Trees: What They Feel, How They Communicate (Vancouver: Greystone Books, 2015)
Hege Library, “The Woods and the Beginning of the Underground Railroad,” Guilford College (January 2019)
Omar Ali, “Into the Forest, Out of the Woods: Thoughts on Eric Foner’s Gateway to Freedom,” Politics for the People: History and Politics from an Independent Perspective (April 2015)
Fergus Bordewich, Bound for Canaan: The Underground Railroad and the War for the Soul of America (New York: HarperCollins, 2005)
Hope Jahren, Lab Girl (New York: Alfred A. Knopf, 2016)
William J. Moore Gallery, “Voices of a City: Debating Liberty, 1800-1890,” Greensboro History Museum (2019)
Gareth Cook, “Do Plants Think?”, Scientific American (June 2012)
Levi Coffin, Reminiscences of Levi Coffin, The Reputed President of the Underground Railroad, (Robert Clarke & Co., 1880)
Sylviane A. Diouf, Slavery’s Exiles: The Story of the American Maroons (New York University Press, 2014)