Magruder, John Bankhead (American / Confederate officer, 1807-1871)
   Local Matters at Richmond (1861)

Maine (State of)
   A New County (1832)

Māori People
   Relations with Colonial Government
     The Native Question – Boundary Issues (1879)

Maritime History
   Ghost Ships / Abandoned Vessels
     Notes from the Marine List — Ghost Ship (1846)

   Marine Engineering
     A “Sliding” Boat (1905)
     A Splendid Run — New Steamer Record (1851)

Market Garden (World War 2 Operation)
   Landings “Going Well.” (Sep 18)

Maryland (State of)
   In the US Civil War
     The Position of Maryland (1861)

Massachusetts (State of)
   In the US Civil War
     Commissioners to Washington (1861)

McClennan, George B. (American Army officer and politician, 1826-1885)
   Fight at Rich Mountain (1861)
   Congressional Inquiry Denied (1862)

Mexican-American War
   The Mines of Mexico (1848)

Miller, Patrick (Scottish Banker & Inventor, 1731-1815)
   Early Steam Vessel Experiments (1789)

Mining
   Strikes and Labor Relations
     Visiting Miners Watched at Pocahontas (1895)

Mississippi, USS (Battleship BB-41)
   Lack Air Pressure Cause of Blast on U.S.S. Mississippi (1924)

Montana (State of)
   Town, County and State News (1900)
   Pleasant Social Event (1908)

Mount Vernon (Steamship)
   The Steamship Mount Vernon (1861)

Music
   Mooseheart Band in Concert Here Tonight (1923)

Mysteries, Monsters, the Weird & Unexplained
   The Sea Serpent (1843)
   Rain of … Eels? (1869)
   The Wild Man of Chilhowee (1896)
   In a Magnetic Cloud (1904)
   An Amphibious Monster (1906)