This site merges the book A Guide to Field Guides: Identifying the Natural History of North America by Diane Schmidt, Emeritus Biology Librarian at the University of Illinois, and its companion Web site International Field Guides. The Zotero Library is a searchable database of field guides for plants, animals, and other objects in North America and around the world. Notes in the Zotero records are the annotations written by Schmidt, and except where noted in the annotations, all guides were personally examined by Schmidt.