D.C. Emancipation Day - Provides a history of Emancipation Day from the Historical Society of Washington, D.C.
D.C. Office of the Secretary: Emancipation Day - Provides an event calendar for the Washington, D.C. area, a historical booklet, original documents, and the mayor's proclamation about Emancipation Day.
Wikipedia: Emancipation Day - Overview of Emancipation Day as it is observed in the United States and the Caribbean, celebrating the emancipation of slaves of African origin.