Philadelphia Trees: A Field Guide to the City and the Surrounding Delaware Valley - Paul Meyer

Paul W. Meyer is director emeritus of the Morris Arboretum at the University of Pennsylvania. Catriona Briger has a master's degree in landscape architecture and currently freelances in Philadelphia as a designer, editor, and writer. Edward Sibley Barnard is an editor and an author of several books on natural history, including Central Park Trees and Landscapes: A Guide to New York City's Masterpiece and New York City Trees: A Field Guide for the Metropolitan Area .