1To James Madison from John Langdon, 16 July 1811 (Madison Papers)
I had the honor of receiveing, few days since your letter by Mr. Edwd. Coles and Brother, who...
2To James Madison from John Langdon, 19 September 1814 (Madison Papers)
The only apology a poor Old Man will make to Your Excellency for trespassing on your patience is...