Dragonflies through binoculars: a field guide to dragonflies of North America.

Oxford: Oxford University Press, 2000.
Octavo, paperback, 266 pp. colour photographs, maps.

Contains information on all 307 species found in North America, including Petaltails, Darners, Clubtails, Spiketails, Cruisers, Emeralds, and Skimmers. Was $60.