Ostrya virginiana (Eastern Hophornbeam)
- Detailed facts on habitat and life history, including native range, supporting soils, associated forest cover, reproduction, and growth.
- http://www.na.fs.fed.us/spfo/pubs/silvics_manual/volume_2/ostrya/virginiana.htm

Ostrya knowltonii
- Information on distribution and occurrence, its value and use, characteristics, and fire ecology.
- http://www.fs.fed.us/database/feis/plants/tree/ostkno/

Ostrya virginiana
- Information on distribution and occurrence, value and use, characteristics, and fire ecology of Eastern Hophornbeam.
- http://www.fs.fed.us/database/feis/plants/tree/ostvir/