(1)
Morgan Steam, Worcester, MA 1896
(0)
Mount Pleasant Motor Co., Mount Pleasant, MI 1914-1915
(0)
MacDonald Steam Automotive Corp. Garfield, OH 1923-1924
(0)
Mack Truck, Greensboro, North Carolina 1900- present
(0)
Mackle-Thompson Automobile Co. Elizabeth, NJ 1903
(1)
MacLeod Motor Carriage,Cincinnati,OH 1985
(0)
All Steel Motor Car Co. Macon, MO 1915-1917
(0)
Madison Motors Co. Madison, IN 1915-1919
(0)
Magnolia Automobile Co. Riverside, CA 1902
(0)
Mahoning Motor Car Co. Youngstown, OH 1904-1905
(0)
Maibohm Motors Co. Racine, WI 1916-1919 Maibohm Motors Co. Sandusky, OH 1919-1922
(0)
W. S. Reed Co. Maillon, OH 1909
(0)
Majestic Motor Co. New York, NY 1917
(0)
Malcolm Jones Cyclecar Co. Detroit, MI 1914-1915
(0)
Malden Automobile Co. Malden, MA 1898
(0)
Manufacturers & Exporters Alliance, New York, NY 1921
(0)
Manlius Motor Co. Manlius, NY 1910
(0)
Maplebay Mfg Co. Crookston, MN 1908
(0)
Southern Motor Works Jackson, TN 1908-1910 Marathon Motor Woks Nashville, TN 1910-1915
(0)
Marble-Swift Automobile Co. Chicago, IL 1903-1905
(0)
Marion Motor Car Co. Indianapolis, IN 1904-1915
(0)
Marion Flyer Marion, Indiana 1910
(0)
Mutual Motors Company, Jackson, Michigan 1916-1919
(0)
Marketour Electric Cars Long Beach, CA 1964
(0)
Marlboro Motor & Carriage Co. Marlboro, MA 1899-1902
(1)
Nordyke and Marmon Co. Indianapolis, IN 1902-1915 Marmon Motor Car Co. Indianapolis, IN 1916-1933
(0)
Marr Auto Car Co. Detroit, MI 1903-1904
(0)
Marsh Motor Carriage Co. Brockton, MA 1899
(0)
Marshall Mfg Co. Chicago, IL 1919-1921
(0)
Martin Aeroplane Co. Garden City, Long Island, NY 1930-1932
(0)
Martin Aeroplane Co. Garden City, Long Island, NY 1929-1930
(0)
Martin Development Laboratories Rochelle Park, NJ 1948
(0)
Martin Motor Co. Springfield, MA 1922
(0)
Commonwealth Research Corp. New York, NY 1954
(0)
Marvel Motor Car Co. Detroit, MI 1907
(0)
Maryland Automobile Mfg. Co. Luke, MD 1900-1901
(0)
Sinclair-Scott Co. Baltimore, MD 1907-1910
(0)
William B. Mason Milton, MA 1898-1899
(0)
Mason Motor Car Co. Des Moines, IA 1906-1908 Mason Automobile Co. Des Moines, IA 1908-1914
(0)
Master Motor Car Co. Cleveland, OH 1917-1918
(0)
Matheson Motor Car Co. Grand Rapids, MI 1903 Matheson - Matheson Motor Car Co. Holyoke, MA 1903-1905 Matheson Motor Car Co. Wilkes-Barre, PA 1906-1910 Matheson Automobile Co. Wilkes-Barre, PA 1910-1912
(0)
Maxwell-Briscoe Motor Co. Newcastle, IN & Tarrytown, NY 1904-1913 Maxwell Motor Corp. Detroit, MI 1913-1925
(0)
Maytag-Mason Motor Co. Waterloo, IA 1910-1915
(0)
McCue Co. Hartford, CT 1909-1911
(0)
Backbay Cycle & Motor Co. Boston, MA 1899-1900
(1)
McFarlan Motor Car Co. Connersville, IN 1910-1928
(0)
McGill Motor Car Co. Fort Worth, Tex. 1922
(0)
W. H. McIntyre Co. Auburn, IN 1909-1915
(0)
Stanley Mfg Co. Lawrence, MA 1900-1902
(0)
Times Square Automobile Co. Detroit, MI 1915-1916
(0)
Menominee Electric Mfg Co. Menominee, MI 1915
(2)
Mercer Automobile Co. Trenton, NJ 1910-1925 Elcar Motor Car Co. Elkhart, IN 1931
(0)
Springfield Cornice Works Springfield, MA 1900 Berg Automobile Co. New York, NY 1905 Worthington Automobile Co. New York, NY 1905-1906 Meteor Motor Car Co. Bettendorf, IA 1907-1909 Meteor Motor Car Co. Davenport, IA 1909-1910 Meteor Motor Car Co. Shelbyville, IN & Piqua, OH 1914-1930 Meteor Motors Inc. Philadelphia, PA 1919-1922
(0)
Metropol Motors Corp. Port Jefferson, Long Island, NY 1913-1914
(0)
Metropolitan Motors Inc. Kansas City, MO 1922-1923
(0)
American Motors Corp. Kenosha, WI 1954-1961
(0)
Metz Company Waltham, MA 1909-1911 Metz Company Waltham, MA 1911-1915 Metz Company Waltham, MA 1915-1917
(0)
A. J. Meyer Corp. Chicago, IL 1919
(0)
Michigan Automobile Co. Kalamazoo, MI 1903-1908 Michigan buggy Co. Kalamazoo, MI 1908-1914
(0)
Middleby Auto Co. Reading, PA 1908-1913
(0)
Middletown Buggy Co. Middletown, OH 1909-1911
(0)
Midland Motor Co. Moline, IL 1908-1913
(0)
Mier Carriage & Buggy Co. Ligonier, IN 1908-1909
(0)
Milburn Wagon Co. Toledo, OH 1914-1922
(0)
Miller Car Co. Detroit, MI 1912-1913 Harry A. Miller Inc. Los Angeles, CA 1915-1929 Rellimah Inc. Los Angeles, CA 1930-1932
(0)
Milwaukee Automobile Co. Milwaukee, WI 1900-1902
(0)
Mitchell Motor Car Co. Racine, WI 1903-1910 Mitchell-Lewis Motor Co. Racine, WI 1910-1916 Mitchell Motors Co. Inc. Racine, WI 1916-1923
(0)
Mobile Company of America, Tarrytown, NY 1899-1903
(0)
Mobilette Electric Cars Long Beach, CA 1965
(0)
Model Gas Engine Co. Auburn, IN 1903-1904 Model Gas Engine Works Auburn, IN 1904-1906 Model Automobile Co. Peru, IN 1906-1909
(0)
Mohawk Auto & Cycle Co. Indianapolis, IN 1903-1904 Mohawk Motor Co. Boston, MA 1914-1915
(0)
Mohler & Degress, Astoria, Long Island, NY 1901
(0)
Mohs Seaplane Corp. Madison, WI 1967-1979
(0)
Moline Automobile Co. E. Moline, IL 1904-1913 Moline Automobile Co. E. Moline, IL 1914-1919
(0)
Moller Motor Car Co. Lewistown, PA 1920-1921
(0)
P. J. Dasey Co. Chicago, IL 1903 Monarch Motor Car Co. Chicago Heights, IL 1905-1909 Monarch Machine Co. Des Moines, IA 1908 Monarch Motor Car Co. Detroit, MI 1914-1917
(0)
J. A. Moncrieff Co. Pawtucket, RI 1901-1902
(0)
Aristos Co. New York, NY 1914
(0)
Monitor Automobile Works Janesville, WI 1909 Cummins Monitor Co. Columbus, OH 1915-1922 Minitor Motor Car Co. Columbus, OH 1915-1922
(0)
Monroe Motor Co. Flint, MI 1914-1916 Monroe Motor Co. Pontiac, MI 1916-1918 William Small Co. Flint, MI 1918-1922 Premier Motor Corp. Indianapolis, IN 1923-1924
(0)
Moon Motor Car Co. St. Louis, MO 1905-1930
(0)
Moore Automobile Co. Walla Walla, WA 1906 H. S. Moore Cleveland, OH 1906 Moore Automobile Co. New York, NY 1906-1908 Moore - 1Moore Motor Vehicle Co. Minneapolis, MN 1916-1917 Moore - Moore Motor Vehicle Co. Danville, IL 1917-1921 Indianapolis, IN 1917, NY 1906-1908 Moore Motor Vehicle Co. Minneapolis, MN 1916-1917 Moore Motor Vehicle Co. Danville, IL 1917-1921 Indianapolis, IN 1917
(0)
Mora Motor Car Co. Newark, NY 1906-1911
(1)
Morgan Motor Carriage Co. Worcester 1897-1902
(0)
Morlock Automobile Co. Buffalo, NY 1903
(0)
Morris & Salom Philadelphia, PA 1894-1897
(0)
Crow-Elkhart Motor Car Co. Elkhart, IN 1919-1925 Century Motor Co. Elkhart, IN 1919-1925
(0)
William Morrison, Des Moines, IA 1887-1897
(0)
Morse Motor Vehicle Co. Springfield, MA 1904-1909 Easton Machine Co. South Easton, MA 1909-1916
(1)
Mosler Automotive, Riviera Beach, Florida 1985-present
(0)
C. W. Kelsey Mfg Co. Hartford, CT 1910-1912
(0)
Moyea Automobile Co. New York, NY 1902-1904 Moyea - Consolidated Motor Co. New York, NY 1904
(0)
H. A. Moyer Syracuse, NY 1911-1915
(1)
Mr. Norm's Garage, Machesney Park IL 1963-present
(1)
Mueller & Co. Decatur, IL 1895-1900
(0)
Multiplex Mfg. Co. Berwick, PA 1912-1913 Multiplex Mfg. Corp. Berwick, PA 1954
(0)
Munson Electric Motor Co. La Porte, IN 1896-1902
(0)
Muntz Car Co. Inc. Evansville, IN 1950-1951 Muntz Car Co. Inc. Chicago, IL 1951-1955
(0)
Murdaugh Automobile Co. Oxford, PA 1901
(0)
Murena Motors Inc. New York, NY 1969-1970
(0)
Church Mfg Co. Adrian, MI 1902-1903 Murray Motor Car Co. Pittsburgh, PA 1916-1918 Murray Motor Car Co. Atlantic, MA 1921-1928
(0)
Mustang Engineering Corp. Seattle, WA 1948
(0)
Myers Motors , Tallmadge, Ohio 2003-present