Butterflies of Maine and the Canadian Maritime ProvincesPhillip G. deMaynadier, John Klymko, Ronald G. Butler, W. Herbert Wilson Jr., John V. Calhoun · First published 2023Open the Tome
Science and conservation of vernal pools in northeastern North AmericaAram J. K. Calhoun, Phillip G. DeMaynadier · First published 2007Open the Tome
