California Cultures: African Americans -- primary from California libraries and museums
Digital Public Library of America -- primary sources from libraries across the U.S.
Black History and Culture -- images, videos, & essays from Google Arts & Culture
Schomburg Center for Black Culture -- primary sources on the African American, African Diaspora, and African experience.
Library of Congress -- primary sources
Library of Congress-- African American Studies
Docs Teach -- primary sources from the National Archives