Black Freedom [https://blackfreedom.proquest.com/]
A free database of primary sources from 1790 through the 2000s.
Black Lives Matter [https://institutions.exacteditions.com/blm]
A free compilation of articles on Black Lives Matter in categories: Activism, Art, Film & Stage, History, Literature, Music, and Politics.
Note: Browse each category rather than using the search button because it does not search only the content that is freely-available through this page.