Maclay, William [6 references]

M'Clenachan, Blair [1 reference + 1 subentry]

McDowell, Samuel, Jr. [1 reference + 1 subentry]

McGillivray, Alexander [2 references]

McHenry, James [3 references + 1 “see also” entry]

McHenry, John (brother of James) [2 references]

McKean, Thomas [1 reference]

Madison, Ambrose [2 references]

Madison, James, Sr. [1 reference]

Madison, James, Jr. [76 subentries]

Madison, the Reverend James [5 subentries + 1 “see also” entry]

Madison, Nelly Conway (Mrs. James, Sr.) [3 references]

Madison, Sarah Tate (wife of the Reverend James Madison) [1 reference]

Madison, William [1 reference]

Manning, James [1 reference + 1 subentry]

Marshall, John [1 reference + 1 “see also” entry]

Maryland [2 references + 4 subentries]

Maryland (ship) [1 reference]

Mason, George [1 reference]

Mason, John [3 references + 1 subentry]

Mason, Stevens Thomson [1 reference + 1 “see also” entry]

Mason, William [2 references + 1 subentry]

Massachusetts [6 references + 6 subentries]

Massie, Nathaniel, Sr. [1 reference + 1 subentry]

Massie, Nathaniel, Jr. [1 subentry]

Mathews, George [2 references + 1 “see also” entry]

Maury, Fontaine [2 references + 1 subentry]

Maury, James [4 references + 3 subentries + 1 “see also” entry]

Mazzei, Philip [2 references + 1 “see also” entry]

Mennis, Francis [1 subentry]

Mercer, James [3 references + 1 “see also” entry]

Mercer, John Francis [1 reference + 1 “see also” entry]

Meredith, Samuel [2 references]

Meriwether, Thomas [1 reference]

Merrimack River [1 reference]

Mifflin, Thomas [1 reference + 1 “see also” entry]

Minto, Walter [1 reference + 1 subentry]

Mirabeau, Honoré Gabriel Riquetti, comte de [1 reference]

Mississippi River [1 subentry]

Mohawk River [1 reference]

Molasses [1 subentry]

Monocacy River [1 reference]

Monroe, Elizabeth Kortright (Mrs. James) [3 references]

Monroe, James [1 reference + 6 subentries]

Montmorin Saint Hérem, Armand Marc, comte de [1 reference]

Moore, Andrew [3 references + 1 subentry]

Morgan, George [1 subentry + 1 “see also” entry]

Morris, Gouverneur [4 references]

Morris, Richard [1 reference + 1 “see also” entry]

Morris, Robert [3 references + 2 subentries]

Moustier, Eléonor-François-Elie, marquis de [2 references]

Muhlenberg, Frederick Augustus Conrad [2 references + 1 subentry + 1 “see also” entry]

Muhlenberg, Peter [2 references]

Mulattoes [1 subentry]

Muse, Hudson [2 references + 1 “see also” entry]