Smith, J.E. & J. Abbot, 1797. The natural history of the rarer lepidopterous insects of Georgia. J. Edwards, Cadell & Davies, and J. White, London., vol.1, vol.2.

See Calhoun (2006) below for a contemporary look at the 24 butterflies described in these books and other fun facts about this wonderful work.
Calhoun, J.V., 2006. A glimpse into a "Flora et Entomologia": The Natural History of the Rarer Lepidopterous Insects of Georgia by J. E. Smith and J. Abbot (1797). Journal of the Lepidopterists' Society 60(1): 1-37.