Acknowledgements
Here is a list of our academic sources:

Graves, Arthur H., Illustrated Guide to Trees and Shrubs. Lancaster Press Inc: Lancaster, 1952.

Little, Elbert L., National Audubon Society: Field Guide to North American Trees: Eastern Region. Chanticleer Press: New York, 1980.

Petricles, George A., Peterson Field Guides: A Field Guide to Eastern Trees: Eastern Unites States and Canada, including the midwest. Illustrated by Janet Wehr. Houghton Mifflin: Boston, 1998.

Preston, Richard J., North American Trees (Exclusive of Mexico and Tropical United States). The Iowa State University Press: Ames, Iowa, 1961.

"The Trees of Carl Schurz High School."

Thank you to Jason Biggerstaff and Professor Dan Perlman for contributing some of the images used on this site.

Thank you to Professor Perlman and our teaching assistant Sharon Barotz for teaching us how to "address the tree."