Considerations on the Doctrine of Phlogiston and the Decomposition of Water: 1796
   Paper given by Priestley giving a summary of reasons to doubt the new antiphlogistic theory and retain that of phlogiston. Original text in HTML format, includes a glossary of archaic chemical terms .
   http://webserver.lemoyne.edu/faculty/giunta/phlogiston.html

Disquisitions Relating to Matter and Spirit (1777)
   Complete text and image facsimile of the book . Held by: Department of Special Collections, Van Pelt Library, University of Pennsylvania .
   http://dewey.library.upenn.edu/sceti/printedbooksNew/index.cfm?textID=priestley_disq_sel&PagePosition=1

Jesus, Socrates, and Others
   Text of a letter written to Priestly in by Thomas jefferson in 1803 .
   http://www.positiveatheism.org/hist/jeff1120.htm

Joseph Priestley on Making Carbonated Water (1772)
   A fascimile of a 22-page pamphlet written and printed in 1772.
   http://dbhs.wvusd.k12.ca.us/webdocs/Chem-History/Priestley-1772/Priestley-1772-Start.html

Joseph Priestley, 1733-1804
   A lecture treating Priestley's life and work.
   http://www.historyguide.org/intellect/priestley.html