Dragonflies of the Northwoods
by Kurt Mead
This is the best field guide for Minnesota dragonflies. It contains most of the species found in the state with very few species that are not found in Minnesota. Its size also makes it very easy to carry in the field.
Damselflies of the Northwoods
by Bob Dubois
Written by Bob Dubois, an honorary life time member of the MDS, this is the most comprehensive guide for Minnesota Damselflies. Unfortunately it is currently out of print so finding a copy may be difficult.
Damselflies of the Northeast
Contains many of the damselfly species in Minnesota. An excellent companion to Damselflies of the North Woods.
Dragonflies and Damselfies of Northeast Ohio
by Larry Rosche with Judy Semroc and Linda Gilbert
Although this book focuses on dragonflies of Northeast Ohio it contains most of the species found in Minnesota, especially some of the states southern species that are not covered by the North Woods books.
Dragonflies and damselflies of the East
by Dennis Paulson
A great resource for identifying dragonflies, especially out of state specimens. Paulson's companion guide, Dragonflies and Damselfies of the West, is also a must have.
Dragonflies Through Binoculars: A Field Guide to Dragonflies of North America
by Sidney W. Dunkle
One of the first dragonfly field guides. A true pioneer.
Stokes Beginner's Guide to Dragonflies
by Blair Nikula, Jackie Sones, Donald and Lillian Stokes
A beginners guide, featuring many of the commonly found species of Minnesota.
Color Guide to Common Dragonflies of Wisconsin
by Karl and Dorothy Legler
Back in print and available through the University of Wisconsin Arboretum Bookstore.