1From John Quincy Adams to Alexander Bryan Johnson, 11 June 1825 (Adams Papers)
I regret much that an usage, which has been uniformly observed since the existence of our Government, interdicts me the pleasure which I should take in complying with your request to furnish a Letter of Introduction, for Mr Greig to some person in London. Praying to be remembered affectionately to my Niece, I remain / Dear Sir, your friend and humble Servt MHi : Alexander B. Johnson Letters.