PA: American Birding Association Field Guide to Birds of Pennsylvania (American Birding Association State Field) George Mayfield Pennsylvania December 6, 2016
Southern California Reptiles and Amphibians by Donald Becker (iOS & Android App) George Mayfield Apps, Herp App, Reptiles & Amphibians, Reptiles & Amphibians: North America July 8, 2016
Endemic Birds of Cuba: A Comprehensive Field Guide George Mayfield Birds, Caribbean, Cuba November 30, 2016
Britain’s Birds: An Identification Guide to the Birds of Britain and Ireland (WILDGuides) George Mayfield Birds, England, Europe, Ireland, Scotland February 10, 2017
A Field Guide to Western Reptiles and Amphibians (Peterson Field Guides) George Mayfield Reptiles & Amphibians, Reptiles & Amphibians: North America July 8, 2016
The Sibley Field Guide to Birds of Western North America: Second Edition George Mayfield Western North America March 4, 2016
Damselflies of the Northeast : A Guide to the Species of Eastern Canada & the Northeastern United States George Mayfield Dragonflies & Damselflies: North America, Insects April 7, 2016
Birds of Costa Rica: A Field Guide (Corrie Herring Hooks) George Mayfield Costa Rica, Mexico & Central America March 3, 2016
Birds of New Guinea: Second Edition (Princeton Field Guides) George Mayfield Australia, New Zealand, South Pacific, New Guinea, Papua New Guinea, South Pacific March 30, 2017
The Slater Field Guide to Australian Birds George Mayfield Australia, Australia, New Zealand, South Pacific March 22, 2017
