This page has been split

“George W. Erving at Madrid, 1807, and John Quincy Adams at St Petersburg, 1812” combined two letters in different American legation codes. Each now has its own page:

• John Quincy Adams to the Secretary of State, St Petersburg, No. 88, 25 June 1812 (Adams’s own code, the = 1385, key recovered from the clerk’s decodes and Ford’s printed decipherments)
• George W. Erving to James Madison, Madrid, 24 March 1807 (Pinckney’s legation code, the = 1651, from Madison’s own decode)