O&H Transport, Inc.	OHTX	added 10/67; 4/70-1/80
O.E. Linsin, Inc.	OELX	4/38-4/70; eliminated 4/74
O.J. Tauber	OJTX	10/57-7/65; eliminated 10/65
Ocala Recycling Co.	BIAX	eliminated 7/97; 7/2000
Occidental Chemical Agricultural Products, Inc.	OCCX	added 1/83; eliminated 7/88
Occidental Chemical Co.	OCCX	added 4/81; eliminated 1/83
	OCCX	added 1/92; 1/94-7/2000
	OCPX	added 1/92; 1/94; eliminated 7/99
	OPIX	added 1/92; 1/94; eliminated 10/98
	ALAX	added 1/92; 1/94; eliminated 10/95
	DAX	added 1/92; 1/94-7/2000
	FPCX	added 1/92; 1/94; eliminated 7/99
	HCPX	added 1/92; 1/94-7/2000
	HOKX	added 1/92; 1/94-7/2000
	WAGX	added 10/95; eliminated 4/96
Occidental Chemical Corp. Agricultural Products	OCCX	added 4/89; eliminated 1/92
Occidental Chemical Corp. Agricultural Products Group	OCCX	added 7/88; eliminated 4/89
Occidental Chemical Corp., Alathon Polymers Division	ALAX	added 7/90; eliminated 1/92
Occidental Chemical Corp., Electrochemicals & Specialty Products	DAX	added 10/89; eliminated 1/92
	HCPX	added 10/89; eliminated 1/92
	HOKX	added 10/89; eliminated 1/92
Occidental Chemical Corp., Electrochemicals, Detergent & Specialty Products Group	HCPX	added 7/87; eliminated 1/88
	HOKX	added 7/87; eliminated 1/88
Occidental Chemical Corp., Electrochemicals, Detergents & Specialty Products	DAX	added 1/88; eliminated 10/89
	HCPX	added 1/88; eliminated 10/89
	HOKX	added 1/88; eliminated 10/89
Occidental Chemical Corp., Electrochemicals, Detergents & Specialty Products Group	DAX	added 7/87; eliminated 1/88
Occidental Chemical Corp., Hooker Industrial & Specialty Chemicals	HCPX	added 10/82; eliminated 7/84
	HOKX	added 10/82; eliminated 7/84
Occidental Chemical Corp., Industrial & Specialty Chemicals	HCPX	added 7/84; eliminated 7/87
	HOKX	added 7/84; eliminated 7/87
Occidental Chemical Corp., Petrochemicals Division	OPIX	added 4/91; eliminated 1/92
Occidental Chemical Corp., PVC Resins	OCPX	added 1/88; eliminated 1/92
	FPCX	added 10/82; eliminated 1/92
OCI Chemical Corp.	STAX	added 7/96; 7/2000
OCI Chemical Wyoming Co.	SWYX	added 7/96; 7/2000
Octel America, Inc.	OCTX	Jul-00
Octoraro Ry., Inc.	OCTR	added 10/78; 1/80-1/94; eliminated 10/94; 7/2000
Ogden Financial Services Corp.	OFSX	1/94; eliminated 1/95
Ogden Martin Systems of Montgomery	NEMX	added 10/96; 7/2000
Ogdensburg Bridge & Port Authority	ONRY	Jan-75
Ogdensburg Bridge and Port Authority	NSL	added 1/77; eliminated 7/77
Ogeechee Ry. Co.	OGEE	added 10/89; eliminated 1/93; 1/94-7/2000
Oglebay Norton Co.	CSCX	added 4/82; eliminated 4/89
Oglebay Norton Industrial Sands, Inc.	ONSX	Jul-00
Ohio & Pennsylvania R.R. Co.	OHPA	added 10/95; 7/2000
Ohio Central R.R. Inc.	OHCR	added 7/88; 1/94
	OHCR	1/94-7/2000
Ohio Edison Co.	OEDX	4/61-1/80; eliminated 5/83
Ohio Midland Light & Power	OMLP	1/75-1/80
Ohio Power Co.	OPX	added 10/58; 4/61-7/2000
Ohio R.R. System	OHCR	eliminated 10/92
	OSRR	eliminated 10/92
	YARR	eliminated 10/92
Ohio Southern R.R., Inc.	OSRR	added 10/87
	OSRR	1/94-7/2000
Ohio Tank Car Co.	AGCX	Apr-38
Ohio Valley Electric Co.	OVEX	added 1/97; 7/2000
Ohi-Rail Corp.	OHIC	added 10/82; eliminated 10/87; eliminated 1/91; 1/94-7/2000
Oil Creen & Titusville Lines	OCTL	1/94-7/2000
Oil States Tank Car Corp. (Mid-Continent Petroleum Corp.)	OSKX	Apr-38
Oil States Tank Car Corp. (Sunray D-X Oil Co.)	OSKX	Oct-66
Oil Tank Line Co.	OILX	4/38-10/57; eliminated 10/60
Oil Well Supply Co. (1980) Ltd.	OWSX	Jul-00
Oil-Dri Corp. of America	ODTX	added 10/96; added 7/99; 7/2000
Oils Unlimited	KFMX	1/75-7/2000
Okanagan Valley Ry. Co.	OKAN	Jul-00
Okarche Central Ry., Inc.	OKCE	added 10/82; eliminated 1/83
OKC Corp.	OKCX	added 4/80; eliminated 10/81
Okee, Inc.	OKEX	Jan-75
OKEX, Inc.	OKEX	1/80; eliminated 7/82
Oklahoma Central R.R.	OCRX	Jul-00
Oklahoma Central R.R. Co.	OCR	added 1/88; eliminated 7/90; 1/94-7/2000
Oklahoma Gas and Electric Co.	OGEX	added 7/76; 1/80-7/2000
Oklahoma Gasoline Plants, Inc.	OGPX	Apr-38
Oklahoma Refining Co.	ORCX	Apr-38
Oklahoma Ry. Co.	OK	Apr-38
Oklahoma Tank Car Co.	RX	Apr-38
Oklahoma Tank Car Line	OKLX	10/66; eliminated 4/69
Oklahoma, Kansas and Texas R.R. Co.	OKKT	added 10/80; added 1/81; eliminated 4/82; added 1/83; eliminated 1/90
Old Augusta R.R. Co.	OAR	1/94-7/2000
Old Hickory Chemical Co.	OHCX	4/38-4/61; eliminated 1/65
Old Line Holding Co., Inc.	OLDX	added 1/92; 1/94-7/2000
	MDDX	Jul-00
Old World Industries Ltd.	OWIX	added 1/2001; eliminated 4/2001
Old World Transportation, Ltd.	OWIX	added 4/2001
Oldbury Electro-Chemical Co.	OECX	4/38-10/57; eliminated 10/57
Olin Corp.	OLNX	1/80-7/2000
	MAWX	added 1/70; 4/70; eliminated 4/73
Olin Mathieson Chemical Corp.	CBMX	10/57-7/65; eliminated 10/66
	MAWX	10/57-10/66; eliminated 1/70
	SASX	10/57-4/61; eliminated 7/65
Olympia Petroleum, Inc.	OLYX	added 7/80
O-M Corp.	OMCX	1/75-1/80
Omaha Packing Co. (National Car Co.)	OPCX	Apr-38
Omaha Public Power District	OMAX	added 1/78; 1/80-7/2000
	OPPX	added 7/94; 7/2000
Omaha, Lincoln and Beatrice Ry. Co.	OLB	added 10/74; 1/75-7/2000
OmniTRAX Leasing, Ltd.	OMLX	Jul-00
Oneida & Western R.R.	OD&W	4/38-1/52
Oneida & Western Transportation	OWTX	Jan-80
Ontario Central R.R. Corp.	ONCT	added 1/80; 1/80-7/2000
Ontario Eastern R.R. Corp.	ONER	added 7/82; eliminated 4/86
Ontario Eastern R.R. Corp. d/b/a Jersey Southern Ry.	JSRW	added 4/85; eliminated 4/87
Ontario Hydro	CNHX	1/80; added 5/83; 1/94-7/2000; eliminated 4/2001
	CPHX	1/80; added 5/83; 1/94-7/2000; eliminated 4/2001
	HEPX	added 7/75; 1/80-7/2000; eliminated 4/2001
Ontario L'Orignal Ry., Inc.	OLO	Jul-00
Ontario Midland R.R. Corp.	OMID	added 1/80; 1/80-7/2000
Ontario Northland Ry.	ONT	1/52-7/2000
	ONTA	added 1/81; 1/94-7/2000
	TEM	1/52-4/70
Ontario Power Generation Inc.	CNHX	added 4/2001
	CPHX	added 4/2001
Ontario Southland Ry. Inc.	OSRX	Jul-00
On-Track Rail Services, LLC	OTSX	Jul-00
On-Track Railcar Services, Inc.	ONTX	added 4/88; 1/94-7/2000
	HRRX	added 4/88; eliminated 10/88; added 4/89; 1/94-7/2000
On-Track Railway Services Ltd.	OTRX	Jul-00
Orange Port Terminal Ry.	OPT	Jul-00
Oregon & Northwestern R.R. Co.	ONW	1/75; added 4/79; 1/80; eliminated 4/89; eliminated 4/90
Oregon Dept. of Agriculture	OREX	1/94-7/2000
Oregon Electric Ry.	OE	1/52-7/65
Oregon Electric Ry. Co.	OE	1/75-1/80
Oregon Electric Ry. Co. (Spokane, Portland & Seattle Ry. Co.)	OE	Oct-66
Oregon Pacific and Eastern Ry. Co.	OPE	1/75-1/80; eliminated 1/94; eliminated 4/95; 7/2000
Oregon Pacific R.R. Co.	OPR	Jul-00
Oregon Trunk Ry.	OT	4/38-7/65
	OT	1/75-1/80
Oregon Trunk Ry. (Spokane, Portland & Seattle Ry. Co.)	OT	Oct-66
Oregon, California & Eastern Ry. Co.	OCE	1/75-1/80; eliminated 4/92; 1/94
Oregon-American Lumber Corp.	OALX	4/38-1/52; eliminated 1/53
Oriental Vegetable Oils Co., U.S.A. (W.R. Grace & Co.)	OVOX	Apr-38
Orlando Utilities Commission	OUCX	added 1/87; 1/94-7/2000
Ormet R.R. Corp.	ORA	Jul-00
Ortner Freight Car Co.	OFCX	added 10/67; 4/70-1/80; eliminated 7/87
Osage R.R.	ORR	1/94; added 1/96; eliminated 10/96; 7/2000
Osborne, Inc.	OOOX	added 10/97; eliminated 4/98; 7/2000
Oscar J. Glover	OJGX	1/94-7/2000
Oscar Meyer & Co. (cars no. 501-599, 801-899) (Mather Stock Car Co.)	OMRX	Apr-38
Oscar R. Howard	ORHX	Apr-38
O-T-D Corp.	OTDX	4/61-1/75; eliminated 1/80
Otha H. Grimes	OHGX	Apr-38
Otha H. Grimes (Grimes Gasoline Co.)	OHGX	Jan-52
Ottawa Central Ry.	OCRR	added 4/2000; 7/2000
Otter Tail Power Co.	OTPX	4/38-10/57; eliminated 10/59
	BSPX	added 1/75; 1/75-7/2000
Otter Tail Valley R.R. Co., Inc.	OTVR	added 4/87; 1/94; eliminated 10/99; 7/2000
Otto Milk Co.	OTOX	Apr-38
Ottumwa Terminal R.R. Co.	OTT	added 1/88; eliminated 7/90; 1/94-7/2000
Ouachita Fertilizer & Grain Co.	NDAX	added 1/62; 7/65; eliminated 10/65
Owasco River	OR	1/75-1/80
Owego and Harford Ry., Inc.	OHRY	added 7/92; 1/94-7/2000
Owens Corning Fiberglas	OCFX	1/94-7/2000
Owens-Illinois Glass Co., Mill Division	OWIX	Apr-61
Owensville Terminal Co., Inc.	OTCO	Jul-00
Oxford Paper Co.	OPAX	added 4/54
	OPAX	added 1/59; eliminated 10/59
Oxford Paper Co., Inc.	OPAX	10/57; eliminated 1/59
	CIX	added 10/58; eliminated 1/59
Oxweld Railroad Service Co.	ORSX	1/52-4/61
OXY Cities Service NGL Inc.	CSNX	added 1/86; eliminated 7/88
OXY NGL Inc.	CSNX	added 7/88
	OPIX	eliminated 1/91
OXY Petrochemicals Inc.	OPIX	added 7/90
	OPIX	eliminated 4/91
Oxy Petrochemicals Inc.	ALAX	added 1/90; eliminated 7/90
OXY USA Inc.	OPIX	added 1/91
	CSNX	eliminated 4/92
Oxy Vinyls L.P.	OCPX	added 7/99; 7/2000
	BFGX	added 7/99; 7/2000
	FPCX	added 7/99; 7/2000
	GVDX	added 7/99; 7/2000
Ozark Car Corp. (Deep Rock Oil Corp.)	OZKX	Apr-38
Ozark Tank Car Co.	OZKX	1/52-4/61
Ozarka Co.	TOZX	Apr-61
Ozarka Water Co.	TOZX	added 4/67; 4/70
Ozarka Water Co., Inc.	TOZX	7/65-10/66; eliminated 4/67
Ozark-Mahoning Co.	OZCX	1/52-4/70
Ozone Co., Inc.	OZX	4/38-10/66; eliminated 1/67