Macdonald, Etienne-Jacques-Joseph-Alexandre, duc de Tarente, 1765-1840.

Letters from the French military leader and legislator to three generations of the Billacoys family.

Marcy, William L. (William Learned), 1786-1857.

Papers of the U.S. Senator (1831-1833); New York State Governor (1833-1838); U.S. Secretary of War under James K. Polk (1845-1849); U.S. Secretary of State under Franklin Pierce (1853-1857). Incoming and outgoing letters concerning a wide variety of subjects such as the establishment of the State Geological Survey (G. W. Boyd, T. A. Conrad, John Delafield, Lardner Vanuxem); the use of volunteers for military service during the 1845-1848 war with Mexico (Silas Wright), the settlement of the New York-New Jersey boundary dispute (Andrew Jackson), the appropriation of public funds (Levi Woodbury, William C. Bouck), and the establishment of a State institution for the mentally handicapped (James B. Richards).

Mary, Queen of Scots, 1542-1587.

Letter from Mary, Queen of Scots, to a Lord Grey, concerning religious tolerance in her realm. Accompanied by several engravings of portraits of her, the earliest dated 1729.

Mason, Lowell B. (Lowell Blake), 1893-1983.

Manuscripts, correspondence, other material from the American attorney and Federal Trade Commissioner.

Mason, Norman P.

Commissioner, Federal Housing Administration. Collection contains correspondence, subject files, printed material, clippings, photographs, press releases.

McCurn, Neal P.

Papers of the New York State Senator from the 46th District, relating to the New York State Constitutional Convention of 1967. Collection includes constituent's letters, memorandums, press releases, pamphlets, and reports.

McKeon, John, 1808-1883.

Letters from Congressman John McKeon, most to Secretary of the Navy Mahlon Dickerson

McKinley, William, 1843-1901.

Miscellaneous items to, from, or about the 25th President of the United States.

McKinley, William Brown, 1856-1926.

Papers of the American legislator. McKinley was the Republican U.S. Representative(1905-1913; 1915-1920) and Senator (1920-1926) from Illinois. Collection includes correspondence, financial records, pamphlets, petitions, photographs, press releases, scrapbooks, and speeches, mostly relating to McKinley's roll as director of William H. Taft's renomination campaign prior to the Presidential election of 1912.

McMahon, John Daniel.

Incoming and outgoing correspondence with New York State lawyer, politican and legislator John Daniel McMahon. Much of it concerns Democratic Party politics and activities.

McWade, Robert M.

American diplomat and civil servant. Collection includes correspondence and memorabilia, including a bound set of petitions supporting McWade's candidacy for Consul General.

Miller family.

Assorted documents relating to Matthias B. Miller, New York physician; Morris S. Miller of Utica, New York; and Rutger Bleecker of Albany, New York.

Miller, Gerrit Smith, 1845-1937.

New York politician and dairy farmer; grandson of New York reformer, philanthropist and abolitionist Gerrit Smith. Collection contains correspondence, financial material, dairy business and herd records, miscellany.

Miller, Nathan L., 1868-1953.

Papers of the New York Governor (1921 to 1922), attorney, General Counsel of U.S. Steel Corporation. Collection contains correspondence, both incoming and outgoing (1902-1958); legal briefs; writings (1922-1953); and memorabilia including family photographs and scrapbooks of political cartoons and clippings (1921-1922). Correspondents include Roger Blough, Calvin Coolidge, Richard Coughlin, Charles Crandall, Frederick Crane, Thomas E. Dewey, John Foster Dulles, Dwight D. Eisenhower, Benjamin Fairless, James A. Farley, Livingstone Farrand, James W. Fawcett, Haley Fiske, Edgar Allen Forbes, George A. Glynn, Will H. Hays, Christian Herter, Richmond Hobson, Herbert Hoover, Charles Evans Hughes, Cordell Hull, Alfred Landon, Herbert Lehman, Irving Lehman, Clayton Lusk, Albert Mann, J.P. Morgan, Irving Olds, Joseph Proskauer, Franklin D. Roosevelt, Theodore Roosevelt, Flem Sampson, Alfred E. Smith, Edward R. Stettinius, Henry Stoddard, William H. Taft, Myron Taylor, Arthur Vandenberg, Paul Vernon, Enders Voorhees, Carl Vrooman, William Wadhams, Wilbur Wakeman, John Weeks, Everett Wheeler, Horace White, and Wendell Willkie.

Monroe, James, 1758-1831.

Two letters written by President James Monroe.

Moran, William P., fl. 1834-1917.

Correspondence and printed material of the American government official.

Morgan, William Duane, b. 1816 or 17.

Correspondence of the American newspaper editor and Democrat. Approximately 30 incoming letters related to Morgan's business and political activities.

Morton, Levi P. (Levi Parsons), 1824-1920.

Papers of the Congressman from New York, United States minister to France, Vice-President of the United States, and Republican governor of New York State. Collection contains mostly incoming correspondence from clergymen, educators, financiers, journalists, and politicians. Some letters are addressed to Morton's executive secretary, Ashley W. Cole.