The North Carolina Digital Collections website has a Civil Rights collection.
“This digital collection contains materials related to the Civil Rights Movement in North Carolina from the 1950s to the 1970s, including letters, speeches, reports, booklets, photographs, news clippings, court records, and proposed legislation. Some of the topics covered include: school desegregation and busing, voting rights, and civil rights protests and demonstrations. The majority of the items presented here were selected from our State Agency records, with an emphasis on Governors Papers. In addition to the official records of elected officials, this collection contains many letters from ordinary citizens expressing their concerns, fears, and hopes.”
“The North Carolina Digital Collections contain over 90,000 historic and recent photographs, state government publications, manuscripts, and other resources on topics related to North Carolina. The Collections are free and full-text searchable, and bring together content from the State Archives of North Carolina and the State Library of North Carolina.”