hoppers for NACC) Memphis Car & Foundry (1894–) Memphis, Tennessee Merchants Despatch Transportation Company Michigan Car Company (1864–1970) Detroit, Michigan (to AC&F) Michigan-Peninsular Car Company (to AC&F) Middletown Car Company (1869 – c. 1930) Middletown, Pennsylvania Midwest Freight Car (1973–) Clinton, Illinois (to Portec 1977) Millenium Rail Milwaukee Car Manufacturing Company (until 1910) Milwaukee, Wisconsin Minerva Car Works (c. 1880 – c. 1920) Minerva, Ohio Minnesota Car Company (1888–1896) Duluth, Minnesota Missouri Car and Foundry Company (1870–) St. Louis, Missouri (to AC&F) Morrison International, A.A. Morrison (to ICC) Morrison-Knudsen Mount Vernon Car Manufacturing Company (1888–1954) Mt. Vernon, Illinois (to Pressed Steel Car 1946) Mowry Car and Wheel Works (1851–1880) Cincinnati, Ohio Murray, Dougall and Company (1864–) Milton, Pennsylvania Muskegon Car and Engine Works (c. 1880 – 1886) Muskegon, Michigan National Alabama Corporation (NAC) National Railway Utilization Company (1976–) Pickens, South Carolina New Haven Car Company (c. 1860 – c. 1879) New Haven, Connecticut Newport News Shipbuilding Company Niagara Car Wheel Company Nobel Brothers & Company (1880s) Rome, Georgia Norca Machinery North American Car Corporation (1955–), Chicago, Illinois (carbuilding operations to Trinity Industries 1986) North Carolina Car Company (1882–) Raleigh, North Carolina North-Western Manufacturing Car Company (c. 1880–) Stillwater, Minnesota Norwich Car Company (1847 – c. 1852) Norwich, Connecticut Ohio Falls Car Manufacturing Company (1864 – c. 1945) Jeffersonville, Indiana (to AC&F) Ortner Freight Car Company (1953–) Covington, Kentucky (to Trinity Industries 1987) Osgood Bradley Car Company (c. 1833 – 1960) Worcester, Massachusetts Ostermann Manufacturing Company (1906–1911) West Pullman, Illinois Oxford Co-operative Car Company (1873 – c. 1878) Oxford, Pennsylvania Pacific Car and Foundry (PACCAR) (1905–) Renton, Washington/Portland, Oregon Paragon Bridge & Steel, Novi, Michigan (to Portec 1968) Pardee Car and Machine Works (c. 1875 – c. 1890) Watsontown, Pennsylvania Pardee, Snyder & Company (1880s) Williamsport, Pennsylvania Patten Car Works (1872 – c. 1890) Bath, Maine Patton Motor Company, Chicago Peninsular Car Company (1879–) Adrian & Detroit, Michigan Pennock Brothers (c. 1875 – c. 1915) Minerva, Ohio Pennsylvania Car Company (1880s) Latrobe & Ligonier, Pennsylvania Perley A. Thomas Car Works Petersburg Car Company (1873–) Petersburg, Virginia Pittsburgh Car Works (c. 1865 – 1883) Pittsburgh, Pennsylvania Pittsburgh & McKeesport Car Company (c. 1855 – 1877) McKeesport, Pennsylvania Portec, Inc. (1968–1984)(to Thrall 1984; autorack designs to Greenville 1986) Portland Company (1848–1912) Portland, Maine Progress Rail Albertville, Alabama Pressed Steel Car Company (1899–1954) Pittsburgh, Pennsylvania Pullman Company (Pullman) Pullman-Standard (PS) (to Trinity Industries 1984)