OdonataCentral – All North American distribution data can be accessed here, with specific pages for Minnesota data, and access to the county lists.
Damselflies of the North Woods by Bob DuBois
Contact Bob at: rbdubois@gmail.com
Dragonflies of the North Woods by Kurt Mead
http://www.dragonfliesofthenorthwoods.com/
Damselflies of the Northeast by Ed Lam
http://homepage.mac.com/edlam/book.html
Stokes Beginner's Guide to Dragonflies and Damselflies by Blair Nikula and Jackie Sones, with Donald and Lillian Stokes
http://odenews.org/stokesguide.htm
Dragonflies Through Binoculars, A Field Guide to Dragonflies of North America by Sidney W. Dunkle
Dragonflies of North America by James G. Needham, Minter J. Westfall, Jr., & Michael L. May
Damselflies of North America by Minter J. Westfall, Jr., and Michael L. May, (revised by Mike May)
The Odonata of Canada and Alaska - Vols. 1 and 2 by Edmund M. Walker
The Odonata of Canada and Alaska – Vol. 3 by Edmund M. Walker and Philip S. Corbet
A survey of the Odonates of Minnesota’s eastern rivers completed in 1997 by John Haarstad: Download PDF
Status Survey for Special Concern and Endangered Dragonflies of Minnesota: Population Status, Inventory and Monitoring Recommendations, 1999, Wayne Steffens and William Smith.: Download PDF
Status Survey for Ophiogomphus anomalus Harvey, and early-season dragonfly inventory of western Superior National Forest Rivers, 2001, Wayne Steffens.: Download PDF
IORI store – envelopes http://www.iodonata.net/
BioQuip – envelopes, nets, etc http://www.bioquip.com/default.asp
The MN DNR has this dragonfly-based language arts curriculum for use by intermediate to high school students: Download PDF
Wisconson Odonata Survey http://inventory.wiatri.net/Odonata/Survey.cfm
Iowa Odonata Survey http://www.iowaodes.com/
Michigan Odonata Survey http://insects.ummz.lsa.umich.edu/MICHODO/MOS.html
Ontario Odonata http://www.netcore.ca/~prairie/odonata.html
Manitoba Dragonfly Survey http://www.naturenorth.com/dragonfly/index.html
World Dragonfly Association http://powell.colgate.edu/wda/
Dragonfly Society of the Americas http://odonatacentral.bfl.utexas.edu/dsa1/default.htm
International Odonata Research Institute http://www.iodonata.net/ (includes many additional links and references)