The Rise and Fall Jim Crow (PBS)
http://www.pbs.org/wnet/jimcrow/segregation.html
PBS's online resource on the Jim Crow era covers the period between 1863 and 1954. It includes many resources for students and teachers, including a run-down of the important events in Civil Rights during this period, profiles of major historical figures involved, and narratives of people who were alive at the time.
Africana Age (New York Public Library)
http://exhibitions.nypl.org/africanaage/index2.html
This an extensive collection of essays, images, and media resources covering black history, in Africa and across the diaspora, from colonialization and slavery through the present day.