Atchison Topeka & Santa Fe
Atlanta & West Point
Atlantic Coast Line
Baltimore & Ohio
Bangor & Aroostook
Belfast & Moosehead Lake
Boston & Maine
Canadian National
Canadian Pacific
Central of Georgia
Central Railroad of New Jersey
Chesapeake & Ohio (includes Hocking Valley)
Chicago Aurora & Elgin
Chicago & Eastern Illinois
Chicago & North Western (includes Chicago St. Paul Minneapolis & Omaha)
Chicago Burlington & Quincy
Chicago Rock Island & Pacific
Cincinnati Hamilton & Dayton
Columbus and Greenville
Conrail
Delaware & Hudson
Denver & Rio Grande Western
Erie
Erie Lackawanna
Florida East Coast
Grand Trunk Western
Great Northern
Houston Belt & Terminal
Illinois Central (includes ICG and Y&MV) 
Kentucky & Indiana Terminal
Louisville & Nashville
Lehigh & New England
Maine Central
Milwaukee Road
Missouri Kansas Texas
Missouri Pacific
Monon
New York Central (includes the Big Four)
New York New Haven & Hartford
Norfolk & Western
Norfolk Southern
Penn Central
Pennsylvania
Pere Marquette
Port Terminal Railroad Association
Reading
Rutland
St. Johnsbury & Lamoille County
St. Louis Southwestern (Cotton Belt)
Seaboard Air Line
Seaboard Coast Line
Soo Line
Southern
Southern Pacific
Tennessee Central
Texas & Pacific
Union Pacific
Wabash
Western Maryland
Western Pacific