When I returned home, I worked on identifying several butterflies and dragonflies which I saw in Victory Bog, Essex County. I identified the Delta-spotted Spiketail with the help of "Dragonflies and Damselflies of the East" (Paulson).
Then I noticed that the photograph in this guide was taken in Essex Co., VT, June 2007, by Bryan Pfeiffer, in Vermont a well-known naturalist, author, photographer, and birding leader. I had followed directions to Victory Bog provided by "Birding Watching in Vermont" co-authored by Bryan. I have crossed paths with Bryan on many occasions as I have birded in the Northeast, passing along, and receiving, sightings.
So thanks to Bryan for his assistance in IDing this brightly patterned dragonfly ...