T-Bone Slim (1882–1942), born Matti Valentinpoika Huhta, was a Finnish American humorist, columnist, poet, musician, hobo, and labor activist who was a prominent writer for the Industrial Workers of the World.

Owen Clayton is senior lecturer in English literature at the University of Lincoln in England and author of Vagabonds, Tramps, and Hobos: The Literature and Culture of U.S. Transiency, 1890–1940 and Literature and Photography in Transition, 1850–1915.

Iain McIntyre is honorary fellow with the School of Historical and Philosophical Studies, University of Melbourne; researcher at the Commons Social Change Library; and author of Environmental Blockades: Obstructive Direct Action and the History of the Environmental Movement.

David R. Roediger is Foundation Professor of American Studies at the University of Kansas and author of The Sinking Middle Class: A Political History of Debt, Misery, and the Drift to the Right and The Wages of Whiteness: Race and the Making of the American Working Class.