Index: Papers of John Adams, Volume 19, M
- Maastricht, Netherlands
- Mably, Gabriel Bonnot, Abbé de (French writer)
- Macaulay, Catharine Sawbridge
- McConnell, Matthew (Phila. merchant)
- McCulloch, Benjamin (of N.C.)
- Machiavelli, Niccolò
- McKean, Thomas (Penn. chief justice)
- MacLaine (McLane), Rev. Archibald (of the English Church at The Hague)
- Maclay, William (Penn. senator)
- Madeira Islands
- Madison, James (of Va.)
- Madrid, Spain
- Maillebois, Yves Marie Desmarets, Comte de (French marshal)
- Mails
- Maine
- Malesherbes, Chrétien Guillaume de Lamoignon de (French jurist)
- Malmesbury, James Harris, 1st Earl of (Brit. diplomat)
- Manchester, England
- Manning, James (of R.I.)
- Mansfield, David Murray, 2d Earl of (Brit. politician)
- Mansfield, William Murray, 1st Earl of (Brit. jurist)
- Manufactures and manufacturing
- Marblehead, Mass.
- Maria I, Queen of Portugal
- Mariana, Juan de
- Marie Antoinette, Queen of France
- Marriages
- Mars (ship)
- Marseilles, France
- Mary (ship)
- Maryland
- Maryland Gazette
- Mason, George (of Va.)
- Massachusetts
- Massachusetts Centinel (Boston)
- Massachusetts Gazette (Boston)
- Massachusetts Historical Society
- Massachusetts Magazine (Boston)
- Masters, Leigh (Md. shipowner)
- Mathematics
- Mathew & Thomas (ship)
- Matlack, Timothy (Penn. politician)
- Matteson, Tompkins Harrison (artist)
- Mauritius
- Maydwell, James (London merchant)
- Mazzei, Philip (of Florence, Italy, and Va.)
- Medals
- Mediterranean Sea
- Mellish, Joseph (Lisbon merchant)
- Mellish (ship)
- Mellish & De Visme (Lisbon mercantile firm)
- Melo e Castro, Martinho de (Portuguese secy. of state)
- Meredith, Samuel (Penn. member of Congress)
- Miami River
- Middelburg, Zeeland, Netherlands
- Middlesex County, Mass.
- Middleton, Rev. Conyers
- Mifflin, Thomas (gov. of Penn.)
- Milan, Italy
- Miller, Capt. Christopher C. (in London)
- Miller, Patrick (Scottish inventor)
- Miller, Mr. (of S.C.)
- Milton, John (Brit. author)
- Milton, John (of Ga.)
- Milton, Mass.
- Minerva (Amer. schooner)
- Minorca
- Minto, Walter (Scottish mathematician)
- Miromesnil, Armand Thomas Hue de (former French keeper of the seals)
- Mississippi River
- Mitchel, Michael (Amer. merchant)
- Mithoff, Johann Georg Friedrich (Brit. royal chaplain)
- Mobs
- Mogador (now Essaouira), Morocco
- Mohammad III
- Mohammad ibn Uthman, Dey of Algiers
- Moliere & Fils (Amsterdam merchants)
- Molini, Pietro (London bookseller)
- Money
- Mont Calvaire (French hermitage)
- Montesquieu, Charles Louis de Secondat, Baron de La Brède et de
- Montgomery, Andrew (Algerian prisoner)
- Montgomery, Gen. Richard (U.S.)
- Monthly Anthology and Boston Review
- Monthly Review (London)
- Monticello (Va. estate)
- Montmorin de Saint Herem, Armand Marc, Comte de (French foreign minister)
- Montrose, Scotland
- Moore, George (of Phila.)
- Moore, Mr. (of Boston)
- Morning Chronicle and London Advertiser
- Morning Post (N.Y.)
- Moroccan-American Treaty of Peace and Friendship
- Morocco
- Morris, Robert (Penn. senator)
- Mortimer, Dr. Charles (of Fredericksburg, Va.)
- Mortimer, John (of Fredericksburg, Va., son of Dr. Charles)
- Mortimer, Thomas (Brit. writer)
- Morton, Perez (of Braintree)
- Morton, Sarah Wentworth Apthorp (poet, wife of Perez)
- Morven (Princeton, N.J., estate)
- Mount Vernon (Va. estate)
- Moustier, Elénore François Elie, Comte de (French minister to U.S.)
- Mowbray, Walter (Portsmouth, England, printer)
- Muhlenberg, Frederick Augustus Conrad (Penn. representative)
- Muhlenberg, John Peter Gabriel (Penn. representative)
- Muir, Robert (of Scotland)
- Munitions
- Munro, Sir Alexander (Brit. consul at Madrid)
- Murphy, Arthur (Irish playwright)
- Murray, Rev. John (of Gloucester, Mass.)
- Murray, Judith Sargent Stevens (Amer. author and wife of John)
- Music