Canadian National 0 Chesapeake and Ohio 0 Chessie System 0 Chicago & Eastern Illinois 0 Chicago and Illinois Midland 0 Chicago and North Western 0 Chicago Burlington & Quincy 0 Conrail 8 Cotton Belt 0 CSX 4 Denver and Rio Grande Western 0 Detroit, Toledo and Ironton 0 Erie 0 Family Lines System 0 Florida East Coast 10 Frisco 0 GATX 0 Great Northern 0 Illiinois Central Gulf 0 Illinois Central 0 Iowa Interstate 7 Kansas City Southern 0 Louisville and Nashville 0 Milwaukee Road 0 Missouri Pacific 0 Missouri, Kansas, Texas 0 Norfolk and Western 8 Norfolk Southern 19 Penn Central 0 Reading & Northern 0 Richmond, Fredricksburg and Potomac 0 Rock Island 0 Santa Fe 4 Soo Line 0 Southern 0 Southern Pacific 0 TTX 0 Union Pacific 8 Wabash 0 Wheeling & Lake Erie 0