The Stokes Beginner's Guide to Dragonflies has been invaluable in these early stages of learning. With a tentative ID, I then try to confirm with Dragonflies and Damselflies of the East, Dennis Paulson (Princeton Field Guides).
Even so, I am not always certain, and many species are closely related and difficult to distinguish. If you think an ID is incorrect, please let me know.
In this post, I begin with some of the larger and more conspicuous dragonflies, all in the Skimmer family.
Common Whitetail (Libellula lydia 1.7")
|Twelve-spotted Skimmer - male|
|Twelve-spotted Skimmer - female|
|Chalk-fronted Corporal - female|
|Chalk-fronted Corporal - male|