Duke University
Molly Green; In Dahomey (Historic American Sheet Music)
This site shows the original sheet music for the first black musical, "In Dahomey," which was written by Paul Laurence Dunbar and Will Marion Cook.
Black Past
Black Past: Bert Williams
This encyclopedia article gives a good overview of the life of Bert Williams, a black entertainer of the early 1900's who broke many color lines.
Digital Public Library of America
Dpla: Blackface Minstrelsy in Modern America
The primary sources in this set reflect blackface minstrelsy after the American Civil War.
Encyclopedia Britannica
Encyclopedia Britannica: Bert Williams
Brief biography of Bert Williams, black comic actor of early 1900s.