18 Mar. 1820
Original paper slip text:18 March 1820.
Washington,
Original paper slip text:Washington: Patent Office
3 p.
- RG 59 (Dept. of State): MLR (M 179, Reel 47)
- Enclosures: (1) 28 Feb. 1820. Washington: Patent Office. William Thornton to Peregrin Williamson; (2) 14 March 1820. Patent Office. William Peregrin to William Thornton.
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Original held by:The National Archives
From the collection: RG 59: General Records of the Dept. of State, Misc. Letters Received, 1 Jan. 1817 - 30 July 1825
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