John Abbot and William SwainsonJanice Neri, Tara Nummedal, John V. Calhoun · First published 2019Open the Tome
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
Butterflies and Skippers of OhioDavid C. Iftner, John A. Shuey, John V. Calhoun · First published 1992Open the Tome
