Salem Witch Trials Research Guide at the Congregational Library & Archives: https://www.congregationallibrary.org/salem-witchcraft-trials-research-guide
The Salem Witch Trials Documentary Archive and Transcription Project: http://salem.lib.virginia.edu/home.html
Eunice Cole resources from the Lane Memorial Library: https://hampton.lib.nh.us/research-history/local-history/people/goody-cole/
The Cornell University Library Witchcraft Collection: http://ebooks.library.cornell.edu/w/witch/
The Casebooks Project (a digital archive of the records of early modern astrologers Simon Forman and Richard Napier): https://casebooks.lib.cam.ac.uk/
Cotton Mather, Memorable Providences Relating to Witchcrafts and Possessions (Boston: 1689). Read online
Increase Mather, An Essay for the Recording of Illustrious Providences (Boston: 1684). Read online
Samuel G. Drake, Annals of Witchcraft in New England (New York:1869). Read online