Slave Patents
Replica source: "Letter from U.S. Attorney General the Honorable J. S. Black to the Honorable J. Thompson, Secretary of the Interior, Regarding Patent Applications by Enslaved Persons," June 10, 1865, National Archives, Records of the U.S. Senate, Record Group 46, National Archives Identifier 5927863, Online Text. https://catalog.archives.gov/id/5927863
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