The Birdwatcher's Companion to North American BirdlifeChristopher W. Leahy · First published 2004Open the Tome
Guide to Backyard Birds of Eastern North AmericaSimon Perkins, Christopher Leahy, Barry W. Van Dusen · First published 1996Open the Tome
Peterson first guide to insects of North AmericaChristopher W. Leahy · First published 1987Open the Tome
The Birdwatcher's CompanionGordon Morrison (Illustrator) Christopher W. Leahy · First published 1982Open the Tome
