In all the records of the negotiations at Madrid in 1805 between the Spanish government and the envoys of the United States there is not the least intimation that Spain was willing to cede the Floridas to this country. Yet, in a hitherto unpublished letter of June 22, 1812, Secretary of State James Monroe states that she was willing to; and Monroe himself with Charles Pinckney, United States Minister to Spain, were the two men who would know the facts.
Patrick, Rembert W.
"A New Letter of James Monroe on the Cession of Florida,"
Florida Historical Quarterly: Vol. 23:
4, Article 3.
Available at: https://stars.library.ucf.edu/fhq/vol23/iss4/3