MANSFIELD—Stern-wheel; built at Belle Vernon, Pa., 1854; 166 tons; St. Paul 1856, 1857—Captain Owens; Clerk Bryant.
MARTHA NO. 2—Built at Shousetown, Pa., 1849; 180 tons; at St. Paul April 24, 1851, from St. Louis; 1852.
MARY BLANE—Captain J. C. Smith, regular St. Louis and Galena Packet, 1848.
MARY C—At St. Paul 1853.
MATTIE WAYNE—Side-wheel; built at Cincinnati, Ohio, 1852; 335 tons; at St. Paul 1856; greatly damaged by fire at St. Louis 1855.
MEDORA—Owned in St. Paul by William Constans, 1857; Captain Ed. McLagan, in Minnesota River trade 1858.
MENDOTA—Captain Robert A. Reilly, at St. Peters, from Galena, 1844; same captain, in St. Louis & Galena trade 1845; Captain Starnes, in St. Louis & Galena trade 1846; snagged opposite Cat Island October, 1847, but raised.
MERMAID—Side-wheel; in collision with Steamer "St. Croix", near Quincy, April 11, 1845; larboard wheel and cook's galley knocked off.
MESSENGER—Large stern-wheel; built at Pittsburg, Pa., 1855; 406 tons; very fast, in St. Paul trade in opposition to Minnesota Packet Company, 1857, from St. Louis; raced with "Key City" for championship of Upper River and was defeated.
METROPOLITAN—Very large side-wheel; St. Louis & St. Paul trade 1856; Captain Thos. B. Rhodes, same trade 1857; Northwestern Line, same captain, 1858, 1859; Captain J. B. Jenks 1860; Captain Thos. B. Buford 1861; sunk at St. Louis by breaking of ice jams, Dec. 16, 1865; valued at $18,000.