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Quercus grisea
http://www.fs.fed.us/database/feis/plants/tree/quegri/
Distribution and occurrence, value and use, characteristics, and fire ecology.
Quercus grisea (Gray Oak)
http://www.cnr.vt.edu/dendro/dendrology/Syllabus2/qgrisea.htm
Describes the form, leaf, flower, fruit, twig, and bark. Includes images.
Quercus grisea (Gray Oak)
http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=233501041
Detailed facts on physical characteristics. Describes habitat and includes range map.