- Digital Atlas
of the Vascular Plants of Utah. www.nr.usu.edu/Geography-Department/utgeog/usuvatlas/family/acer/acgr.html
- Index of Species
Information: Acer grandidentatum. www.fs.fed.us/database/feis/plants/tree/acegra/index.html
- Digital Atlas
of the Vascular Plants of Utah. www.nr.usu.edu/Geography-Department/utgeog/usuvatlas/family/faga/quga.html
- Index of Species:
Quercus gambelli. www.fs.us/database/feis/plants/tree/quegam/index/html
- Behle, William
H. Utah Birds: Historical Perspectives and Bibliography. Occasional
Publication No.9. SLC, UT
- Evans, Howard Ensign.
Pioneer Naturalists: The Discovery and Naming of North American
Plants and Animals. Howard Ensign Evans 1993.
- Common Oak Galls.
Townsend, Lee and Eliason, Eileen. www.uky.edu/Agriculture/Entomology/entfacts/trees/ef408.html
- Western Scrub-Jay
(Aphelocoma Californica). birs.cornell.edu/BOW.WSCJAY 1999
Cornell Lab of Ornithology
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