Common Dragonflies of Wisconsin
Sample page of a field guide that can be ordered directly from the author.
http://userpages.chorus.net/karlndot/

Dragonflies of North Carolina
Checklist, photos of 36 species, and notes.
http://www.rlephoto.com/odes/

Dragonfly Nymphs
Drawings and a brief description.
http://www.state.ky.us/nrepc/water/dragfly.htm

Windows On Nature - Dragonflies
Photo gallery by John D. Ingram from the Austin, Texas area.
http://www.windowsonnature.com/Nature_Pages/Nature_Map/Pages/Dragonflies/

Dragonflies of Williamson County, Texas
Close-up photographs by Jenny Rasmussen, including some of dragonflies in flight
http://www.birdcrossstitch.com/dragonflies/

Dragonfly Nymphs
Fact sheet from Buglopedia.
http://www.bugsurvey.nsw.gov.au/html/popups/bpedia_08_tol_dr-ny-a.html

Dragonflies of the Family Aeshnidae in British Columbia: Biological Notes and Field Key
Profiles the 14 species of the family Aeshnidae, the Darners, that are found in British Columbia.
http://www.royalbcmuseum.bc.ca/Content_Files/Files/aeshnidae_of_BC.pdf

Somatochlora hineana
Matthew Cocchiola provides information on this endangered species, Hine’s Emerald Dragonfly, its classification, description, life cycle, habitat and nutrition.
http://bioweb.uwlax.edu/bio203/s2007/cocchiol_matt