This article discusses the history of slavery in Maine prior to 1820. Questions addressed include what was a nature of slavery when it was not an important part of the labor system and what effects of slavery were on black slaves and later generations of black people in Maine.
Stakeman, Randolph. "Slavery in Colonial Maine." Maine History 27, 2 (1987): 58-81. https://digitalcommons.library.umaine.edu/mainehistoryjournal/vol27/iss2/2