Excerpt: Foley (1966) reported specimens of Williamsonia fletcheri Williamson from rand Traverse County, Michigan as the first record of the species from the lower peninsula and "the second for the United States." However. two other records for the United States were overlooked and this was actually the fourth
Beatty, G. H. and Beatty, A. F.
"United States Records of Williamsonia Fletcheri (Odonata: Corduliidae),"
The Great Lakes Entomologist, vol 2
Available at: https://scholar.valpo.edu/tgle/vol2/iss1/2