Images of National Archives records from three the microfilm publications. Records of the Board of Commissioners for the Emancipation of Slaves in the District of Columbia, 1862-1863, M520, 4 rolls in Records of the Accounting Officers of the Department of the Treasury, RG 217, Records of the United States District Court for the District of Columbia relating to slaves, 1851-1863 M433, 2 rolls and United States. Circuit Court (District of Columbia), Habeas Corpus Case Records, 1820-1863, M434, 2 rolls in Records of the District Courts of the United States in RG 21.