From John Adams to John Marshall, 12 August 1800 Quincy Aug 12th 1800 Dear Sir I return inclosed the duplicate answers to the letter of the prince regent of Portugal signed. MHi: Adams Family Papers, Letterbooks. Index EntriesYou Are Looking AtSource ProjectAdams PapersTitleFrom John Adams to John Marshall, 12 August 1800AuthorAdams, JohnRecipientMarshall, JohnDate12 August 1800ReferenceCite as“From John Adams to John Marshall, 12 August 1800,” Founders Online, National Archives, https://founders.archives.gov/documents/Adams/99-02-02-4511. [This is an Early Access document from The Adams Papers. It is not an authoritative final version.]More between these correspondentsPrecedingFrom Adams to Marshall [11 August 1800]NextFrom Marshall to Adams [12 August 1800]AllAll correspondence between Adams and Marshall