Wych Elm: Ulmus glabra
- Photographs of this tree, its leaves and fruit.
- http://www.plant-identification.co.uk/skye/ulmaceae/ulmus-glabra.htm

The Return of the Elm
- Discusses the status of elms in the U.S. nursery industry in 2000, including the availability of new disease-resistant cultivars of American elm, Asian and European species of horticultural importance, and other production and pathology concerns.
- http://www.ces.ncsu.edu/fletcher/programs/nursery/metria/metria11/warren/elm.htm

Ulmus canescens
- image
- http://www.dipbot.unict.it/orto/0290-1.html

Ulmus procera
- image
- http://www.botany.hawaii.edu/faculty/carr/images/ulm_pro_fr.jpg

About Elm Trees
- Descriptions of ten species of Ulmus, how to identify different species, basic biology of the genus, and advice on caring for elms in the landscape.
- http://www.elmcare.com/about_elms/about_elms.htm

Ulmus rubra
- Distribution and Occurrence; Value and Use; Characteristics; Fire Ecology
- http://www.fs.fed.us/database/feis/plants/tree/ulmrub/