Happy DC Emancipation Day!
From the information linked above (for those of you who didn't follow the link):
On [April 16,] 1862, President Abraham Lincoln signed the Compensated Emancipation Act, For the release of certain persons held to service or labor in the District of Columbia. The Act freed about 3,100 enslaved persons in DC nine months before President Lincoln issued his famous Emancipation Proclamation telegraphing the eventual end of slavery to the rest of the nation. The District of Columbia Compensated Emancipation Act represents the only example of compensation by the federal government to free enslaved persons.
I guess this is one instance where federal plenary authority over the District of Columbia wasn't a totally bad thing. But sitting around depending on the benevolence of unelected officials really shouldn't be the way things run in the nation's capital. DC Vote.