National Archives and Records Administration Record Group 21 [Records of the U.S. District Court for the District of Columbia Relating to Slaves, 1851-1863.] "Emancipation of Daniel Henderson, Matilda Clark, Cornelia & Son, and Mary Johnson. 1862. District of Columbia, U.S. Series: Emancipation Records, 1862-1863. Accessed 2 September 2024. https://catalog.archives.gov/id/55901903 Records of District Courts of the United States, 1685-2009.

Part of National Archives and Records Administration Record Group 21 [Records of the U.S. District Court for the District of Columbia Relating to Slaves, 1851-1863.] "Emancipation of Daniel Henderson, Matilda Clark, Cornelia & Son, and Mary Johnson. 1862. District of Columbia, U.S. Series: Emancipation Records, 1862-1863. Accessed 2 September 2024. https://catalog.archives.gov/id/55901903 Records of District Courts of the United States, 1685-2009.