REPORTING MARK SUFFIXES

X	PRIVATE CAR OWNERS
U	CONTAINERS
Z	TRAILERS

O&A	   ORANGE & ALEXANDRIA RWY. (SOUTHERN RWY.; 
	   PIEDMONT AIR LINE OF RICHMOND & DANVILLE RAILROAD SYSTEM)
O&C	   OXFORD & CLARKSVILLE RAILROAD (SOUTHERN RWY.;
	   PIEDMONT AIR LINE OF RICHMOND & DANVILLE RAILROAD SYSTEM)
O&CM	   OAKDALE & CUMBERLAND MOUNTAIN RAILROAD (SOUTHERN RWY.;
	   KENNESAW ROUTE OF EAST TENNESSEE, VIRGINIA & GEORGIA RWY.)
O&G	   OAKDALE & GULF RWY. CO.
O&H	   OXFORD & HENDERSON RAILROAD (SOUTHERN RWY.;
	   PIEDMONT AIR LINE OF RICHMOND & DANVILLE RAILROAD SYSTEM)
O&W	   NEW YORK, ONTARIO & WESTERN RWY. CO.
OA&M	   ORANGE, ALEXANDRIA & MANASSAS RAILROAD (SOUTHERN RWY.;
	   PIEDMONT AIR LINE OF RICHMOND & DANVILLE RAILROAD SYSTEM)
OACH       CENTRAL TRANSPORTATION CO. {O.A. COOPER CO.}
OACX       CENTRAL TRANSPORTATION CO.
OAG	   OLD AUGUSTA RAILROAD COMPANY
OALX	   OREGON-AMERICAN LUMBER CORP.
OAMX	   OMAHA ALFALFA MILLING CO.
OAR        OLD AUGUSTA RAILROAD LLC
OBCX	   NEATSFOOT OIL REFINERIES CORP.
OBMZ	   OLD BEN #21 MINE
OBPA       *RETIRED 04-15-93 ATP (580)
OBPA	   *OGDENSBURG BRIDGE & PORT AUTHORITY
OBRX	   OREGON BEVERAGE RECYCLING COOPERATIVE
OBTL       ORSCHELN BROS TRUCK LINE
OC	   OLIN CORPORATION
OCAX	   BLUE CUBE OPEATIONS LLC
OCCU       ATS CONTAINER LEASING S.A.
OCCX       OCCIDENTAL CHEMICAL CORP., AGRICULTURAL PRODUCTS
OCCZ	   OCCIDENTAL CHEMICAL CORP.
OCE        RETIRED 06-05-92 (603) ATP [OREGON, CALIFORNIA & EASTERN RY.]
OCEX	   OREGON COASTLINE EXPRESS
OCFX       *CSX TRANSPORTATION (RETIRED 06-24-93)
OCFX       *OWENS CORNING FIBERGLAS
OCFX	   +IOWA FERTILIZER CO.
OCGX	   PURE OIL CO. [OHIO CITIES GAS CO.]
OCHZ	   OIL CITY HISTORICAL SOCIETY
OCIDA	   ONEIDA COUNTY INDUSTRIAL DEVELOPMENT AGENCY
OCIZ	   ONEIDA COUNTY INDUSTRIAL DEVELOPMENT AGENCY
OCJ	   OKLAHOMA CITY JUNCTION RAILWAY CO.
OCL	   OTTUMWA CONNECTING LINE
OCLU       OVERSEAS CONTAINERS, LTD.
OCN	   OLDE COLONY & NEW PORT
OCNU       OCEAN LINES INC.
OCOX	   O'BANNON CO.
OCOZ	   IWENS CORNING
OCPX       OXY VINYLS LP (OCCIDENTAL CHEMICAL CORP., PVC RESINS) 
OCR        OKLAHOMA CENTRAL RAILROAD CO.
OCRR	   OTTAWA CENTRAL RWY
OCRX	   *OIL CREEK REFINING CO.
OCRX	   +OKLAHOMA CENTRAL RAILROAD
OCSM       AMERICAN PRESIDENT INTERMODAL COMPANY
OCSS       OCEANIC STEAMSHIP LINES
OCSX	   OMAHA COLD STORAGE CO.
OCSU       SCRIPPS INSTITUTE OF OCEANOGRAPHY
OCT	   OCTORARO RAILWAY INC
OCTL       OIL CREEK & TITUSVILLE LINES
OCTR	   MORRISTOWN & ERIE RWY. CO. dba OCTORARO RAILROAD
OCTX       OCTEL AMERICA INC.
OCVX	   *OZARK CIDER & VINEGAR CO.
OCVX	   *GREGORY-ROBINSON-SPEAS, INC.
OCW	   OCEAN CITY WESTERN RAILROAD
OD&W	   ONIEDA & WESTERN RAILROAD
ODBZ	   OLD BEN #24 MINE
ODCX	   OLD DOMINION CHAPTER, NATIONAL RWY HISTORICAL SOCIETY
ODOT	   OKLAHOMA DEPARTMENT OF TRANSPORTATION
ODOX	   OLD DOMINION OIL CO.
ODRM       OLD DOMINION CHAPTER - NRHS INC
ODRX	   OZARK REFINING CO.
ODTX       OIL-DRI CORP. OF AMERICA
OE	   *OHIO ELECTRIC RAILWAY CO.
OE         *(BN) RETIRED 10-12-92 ATP [SPOKANE, PORTLAND & SEATTLE RWY. CO.;
	   OREGON ELECTRIC RWY.(SPS)]
OE	   *ORION EXPRESS
OECX	   OLDBURY ELECTRO-CHEMICAL CO.
OEDX       OHIO EDISON COMPANY
OELX       O.E. LINSIN, INC.
OER	   OREGON ELECTRIC RAILWAY
OERR	   OREGON EASTERN RAILROAD
OERY	   ORANGE EMPIRE RAILWAY MUSEUM
OEX	   OAK EXTRACT CO.
OEXX	   ORFORD EXPRESS INC.
OFAX	   RESIDCO
OFBX	   RESIDCO
OFCX       *ORTNER FREIGHT CAR CO.
OFCX       +RESIDCO
OFDX	   RESIDCO
OFEX	   RESIDCO
OFGX	   OSAGE GASOLINE CORP.
OFIX	   JAVA COCONUT OIL CO. LTD. OR NEW YORK [OLIE FABRIEKEN INSTITUTE]
OFKX	   WITCO CHEMICAL [KOCH TANK LINE; OTTO KOCH]
OFOX       RESIDCO
OFPX	   OTOE FOOD PRODUCTS CO.
OFSX       *OGDEN FINANCIAL SERVICES CORP.
OFSX       *TUCSON ELECTRIC POWER COMPANY
OFSX	   +ENVIROSOLUTIONS INC. 
OGCX	   OSAGE GASOLINE CO.
OGCZ	   OVERLAND GRAIN CO.
OGE	   OREGON GREAT EASTERN
OGEE       OGEECHEE RAILWAY COMPANY
OGEX       OKLAHOMA GAS & ELECTRIC CO.
OGEZ	   OGDAN ELEVATOR
OGIX	   O&G INDUSTRIES INC.
OGOX	   OKLAHOMA GASOLINE & OIL CO.
OGPX	   OKLAHOMA GASOLINE PLANTS, INC.
OGSX       ALLIANT ENERGY {IES UTILITIES INCORPORATED; 
	   IOWA SOUTHERN UTILITIES CO.]
OHCR       OHIO CENTRAL RAILROAD SYSTEM [COLUMBUS & OHIO RIVER RAILROAD CO.]
OHCX	   STAUFFER CHEMICAL CO. - EASTERN BRANCH [OLD HICKORY CHEMICAL CO.]
OHFX       *FLUOR DANIEL FERNALD
OHFX       +US DEPT. OF ENERGY EM CONSOLIDATED BUSINESS CENTER
OHGX	   GRIMES GASOLINE CO. [OTHA H. GRIMES]
OHIC       OHI-RAIL CORP.
OHIO	   OHIO TERMINAL RWY CO.
OHKU       OHKA AMERICAN INC. USA
OHOX       U.S. DEPARTMENT OF ENERGY (OHIO FIELD)
OHPA       OHIO CENTRAL RAILROAD SYSTEM (OHIO & PENNSYLVANIA RAILROAD)
OHPX       MERCHANTS DESPATCH TRANSPORTATION CORP.
OHRY       OWEGO & HARTFORD RAILWAY INC
OHSX 	   SCHOENWALD PETROLEUM CO. [O. H. SCHOENWALD]
OHTX	   O & H TRANSPORT, INC.
OIDZ	   OIL DRY
OIER	   INDIANA & OHIO RAIL SYSTEM
OILX	   *TRANSCONTINENTAL TRANSPORT [OIL TANK LINE CO.]
OILX       *(NATX) GENERAL ELECTRIC RAILCAR SERVICES CORPORATION
OIMT       OIM TRANSIT CORP
OJGX       OSCAR J. GLOVER
OJTX       TAUBER TRANSPORTATION CO. [O. J. TAUBER]
OK	   OKLAHOMA RAILWAY CO.
OKAN	   OKANAGAN VALLEY RWY (OMNITRAX)
OKCE       OKARCHE CENTRAL RWY
OKCT	   OKARCHE CENTRAL RWY
OKCX       LONE STAR INDUSTRIES INC. [LOUISIANA CEMENT CO.; OKC CORP.]
OKEX	   OKEX INC. (OKEE INC.)
OKGE	   OKLAHOMA GENERAL ELECTRIC
OKKT       UP [MISSOURI PACIFIC] [OKLAHOMA KANSAS & TEXAS RR.]
OKLX	   OKLAHOMA TANK CAR CO.
OKLZ	   OKLAHOMA FEED
OKRX	   OKLAHOMA RAILWAY MUSEUM LTD.
OKT	   OKLAHOMA KANSAS & TEXAS RAILROAD CO.
OL&I	   UTAH IDAHO CENTRAL RAILROAD CO. [OGDEN, LOGAN & IDAHO RWY. CO.]
OLAU       OCCIDENTAL CHEMICAL CORP. ECHEM & SPECIALTY PROD.
OLB        OMAHA, LINCOLN & BEATRICE RWY CO.
OLBZ	   OLD BEN #25 MINE
OLDX       OLD LINE HOLDING COMPANY INC
OLFZ	   OLYMPIC FOUNDRY
OLGX	   *INEOS OLIGOMERS, DIV. INEOS USA LLC
OLGX	   +INEOS OLIGOMERS USA LLC, affiliate of INEOS USA LLC
OLI	   UTAH IDAHO CENTRAL RAILROAD CO. [OGDEN, LOGAN & IDAHO RWY. CO.]
OLLU       OCEAN LEASING LTD.
OLNX       OLIN CHLOR ALKALI LOGISTICS (OLIN CORP.)
OLO        ONTARIO L'ORIGNAL RWY INC.
OLSS       OLYMPIC STEAMSHIP CO.
OLSX	   ADM TRANSPORTATION CO.
OLTX	   OVERLAND TANK CAR CO.
OLWX	   OHIO LOCOMOTIVE WORKS LLC
OLYG       SHOWA LINE, LTD.
OLYR       OLYMPIC RAILROAD CO.
OLYU       OLYMPIC CONTAINER CORP.
OLYX	   *OLYMPIA PETROLEUM, INC.
OLYX	   +PORT OF OLYMPIA
OLYZ       SHOWA LINE, LTD.
OLZ	   ONTARIO LOCOMOTIVE
OMAX       OMAHA PUBLIC POWER DISTRICT
OMCX	   *O-M CORP.
OMCX	   +OLDCASTLE MATERIALS CEMENT HOLDINGS INC.
OMCZ	   OKEENE MILLING COMPANY
OMID       ONTARIO MIDLAND RAILROAD CORP.
OMLP       OHIO MIDLAND LIGHT & POWER
OMLX       OMNITRAX LEASING LTD.
OMNX	   OMNISOURCE CORP.
OMRX	   *OSCAR MAYER & CO. (MATHER STOCK CAR CO.)
OMRX	   +OZARK MOUNTAIN RAILCAR LLC
OMSX	   J. T. LEASING CO. dba OHIO MULCH
OMX        OSCAR MAYER & CO. (NCCO [FRUIT GROWERS EXPRESS])
OMZ	   OMAK MILL
ON&P	   OKLAHOMA, NEW MEXICO & PACIFIC RWY.
ONCM       OREG NEV CALIF FAST FRT
ONCT       ONTARIO CENTRAL RAILROAD CORP.
ONCX       OPERATION NATIONAL CONCERN
ONCZ	   OWENS NEWS CORP.
ONER	   ONTARIO EASTERN RAILROAD
ONEX	   ONETA REFINING CO.
ONRY	   OGDENSBURG BRIDGE & PORT AUTHORITY
ONS	   OKLAHOMA NATIONAL STOCKYARDS
ONSX       OGLEBAY NORTON INDUSTRIAL SANDS, INC.
ONT        ONTARIO NORTHLAND RWY
ONTA       ONTARIO NORTHLAND RWY (ONTARIO NORTHLAND TRANS. COMMISSION)
ONTX       ON-TRACK RAILCAR SERVICES INC.
ONW        OREGON & NORTHWESTERN RAILROAD CO.
ONYX	   AMERICAN COLLOID COMPANY
OOCL       ORIENT OVERSEAS CONTAINER LINE, INC.
OOCZ       ORIENT OVERSEAS LINE, INC.
OOLU       ORIENT OVERSEAS CONTAINER LINE, INC.
OOLC       ORIENT OVERSEAS CONTAINER LINE, INC.
OOOX       OSBORNE INC.
OORX	   CHARTRAND'S TANK CAR SERVICE (OPELOUSAS OIL REFINERY)
OOUU       ORIENT OVERSEAS LINE, INC.
OPAX	   OXFORD PAPER CO.
OPCX	   *OMAHA PACKING CO. (FRUIT GROWERS EXPRESS)
OPCX	   *PERMANENTE CEMENT CO. [OLYMPIC PORTLAND CEMENT CO. LTD.]
OPCX	   *GENERAL ELECTRIC RAILCAR SERVICES CORP.
OPDZ	   OMAHA POWER DISTRICT
OPE        OREGON, PACIFIC & EASTERN RWY CO.
OPEG	   OREGON, PACIFIC & EASTERN RWY CO.
OPFX	   CIA OCCIDENTAL DE PRODUCTOS FORESTALES, SA
OPGX	   OKLAHOMA PETROLEUM & GASOLINE CO.
OPIX       EQUISTAR CHEMICALS LP [OCCIDENTAL CHEMICAL CORP., - PETROCHEMICALS
	   DIVISION; OXY USA, INC.; OXY NGL, INC.; OXY PETROCHEMICALS]
OPLX	   OREGON PACIFIC LINE, INC.
OPPX	   *OPPENHEIMER CASING CO.
OPPX       +OMAHA PUBLIC POWER DISTRICT
OPPZ	   OSAGE POWER PLANT
OPR        OREGON PACIFIC RAILROAD CO.
OPSU	   EMP
OPSX       PUBLIC SERVICE COMPANY OF OKLAHOMA
OPT        ORANGE PORT TERMINAL RWY
OPX        AEP GENERATION RESOURCES INC. [OHIO POWER CO.]
OR	   *OAHU RAILWAY, INC.
OR         *OWASCO RIVER RAILWAY
OR&C	   OHIO RIVER & CHARLESTON RWY. (SOUTHERN RWY. AFTER 1894)
ORA        ORMET RAILROAD CORP.
ORAN	   ORANGE TERMINAL
ORC	   OGEECHEE RAILROAD CO.
ORCU       BSL TRANSPORT
ORCX	   OKLAHOMA REFINING CO.
ORCZ	   OHIO RIVER COMPANY
OREX	   *OMAHA REFINING CO.
OREX	   *REA EXPRESS, INC. (RAILWAY EXPRESS AGENCY, INC.)
OREX       +OREGON DEPARTMENT OF AGRICULTURE
ORHX	   HOWARD TANK LINE [OSCAR R. HOWARD]
ORHZ	   OREVILLE HERITAGE RAILROAD COMMITTEE
ORMX	   *D. L. ORME
ORMX       *OHIO RAILWAY MUSEUM
OROX       U.S. DEPART. OF ENERGY - OAK RIDGE OPERATIONS 
	   [U.S. ATOMIC ENERGY COMMISSION]
ORPX	   O.E. LINSIN [ATLANTIC-PACIFIC & GULF REFINING CO.; 
	   ORIENT PETROLEUM CO.]
ORR        OSAGE RAILROAD
ORRX	   OREGON DEPT. OF TRANSPORTATION RAIL DIVISION
ORSX	   OXWELD RAILROAD SERVICE CO.
ORTX	   *OHIO RIVER TERMINAL
ORTX	   +O & R TRANSPORT INC.
ORTZ	   OREGON TRUNK
ORUZ	   ORLANDO UTILITIES COMMISSION
ORXX       NORDEN VIDEO INC.
ORY	   OHIO RAILWAY MUSEUM
OS	   ONTARIO SOUTHLAND RWY. INC.
OSCR	   INDIANA EASTERN RAILROAD LLC dba OHIO SOUTH CENTRAL RAILROAD
OSCX	   OIL SEEDS CO.
OSCZ       INTERMODAL SERVICES, INC.
OSGX	   OIL STATE GASOLINE CO.
OSIX       OSI SPECIALTIES, INC.
OSKX       SUNRAY D-X OIL CO. {D-X SUNRAY; MID-CONTINENT PETROLEUM CORP.}
OSL	   UNION PACIFIC RAILROAD [OREGON SHORT LINE]
OSNX	   OSNABROCK FARMERS COOPERATIVE ELEVATOR
OSO	   OCILLA SOUTHERN RAILROAD CO.
OSRR	   OHIO CENTRAL RAILROAD
OSRX	   *OIL STATE REFINING CO.
OSRX       +ONTARIO SOUTHLAND RWY
OSSU       EUROVOS B.V.
OSTX	   NEW YORK OIL STORAGE & TRANSFER CO.
OSZ	   OTTAWA SILICA
OT         (SPS) OREGON TRUNK RY
OTCO       OWENSVILLE TERMINAL CO. INC.
OTCR	   OAKDALE TRACTION CORP.
OTDX	   *O-T-D CORP.
OTDX       +GREENBRIER MANAGEMENT SERVICES LLC [GREENBRIER LEASING CORPORATION])
OTEX	   OTEX TANK CAR CO.
OTOX	   OTTO MILK CO.
OTPX	   OTTERTAIL POWER COMPANY
OTR        OAKLAND TERMINAL RWY
OTRC       OVERSEAS TRANSPORTATION CO
OTRX       ON-TRACK RWY SERVICES LTD.
OTSX	   ON-TRACK RAIL SERVICES LLC
OTT        OTTUMWA TERMINAL RAILROAD CO.
OTTC       OCEAN TRAILER TRANSPORT
OTTX       TTX CO.
OTUM       OTTUMWA CONNECTING RAILROAD CO.
OTX	   OLIVER TANK LINE
OTVR       OTTER TAIL VALLEY RAILROAD CO., INC. (RAIL AMERICA)
OTWX	   OF THE WOODS LLC
OUCH       OUACHITA RAILROAD
OUCX       ORLANDO UTILITIES COMMISSION
OUCZ	   OZARK UTILITIES COMPANY
OURD       OGDEN UNION RAILWAY & DEPOT CO.
OURY	   OGDENSBURG BRIDGE & PORT AUTHORITY
OUS	   OGDEN UNION STOCKYARDS CO.
OV         OTTER VALLEY RAIL ROAD
OVEX       OHIO VALLEY ELECTRIC CO.
OVNT       OVERNITE TRANSPORTATION CO.
OVNZ       OVERNITE TRANSPORTATION CO.
OVO	   OTTAWA VALLEY RAILWAY
OVOX	   GRACE & CO. [W.R. GRACE & CO.; ORIENTAL VEGETABLE OILS CO.]
OVR	   *OTTAWA VALLEY RAILROAD
OVR	   +OHIO VALLEY RAILROAD CO.
OVRR	   OZARK VALLEY RAILROAD INC.
OVRX	   OHIO VALLEY RAILROAD CO.
OVSS       OVERSEAS SHIPPING CO.
OVTX	   OHIO VALLEY TANK LINE
OW         NEW YORK, ONTARIO & WESTERN RY
OWCZ	   OMACK WOOD COMPANY
OWII       OWENS ILLINOIS INC
OWIX	   *OWENS-ILLINOIS GLASS CO., MILL DIVISION
OWIX	   *OLD WORLD TRANSPORTATION, LTD.
OWIX	   +INDORAMA VENTURES LOGISTICS, LLC
OWLU       OCEAN WORLD LINES, INC.
OWSX	   OIL WELL SUPPLY COMPANY (1980), LTD.
OWTX	   *ONIEDA & WESTERN TRANSPORTATION
OWTX       *RETIRED 10-31-91 ATP (1421) [SHAMROCK COAL CO.]
OWY	   OAKWAY LEASING
OXAX	   OXEA CORP.
OXFX	   OXFORD CONSTRUCTION CO.
OXYU       EUROTAINER U.S., INC.
OYLO 	   OLYMPIA & BALTIMORE RAILROAD INC.
OZ	   OLDSMOBILE
OZCX	   OZARK CAR CORP. [OZARK-MAHONING CO.; OZARK CHEMICAL CO.]
OZKX	   UNION TANK CAR CO. [OZARK TANK CAR CO.; DEEP ROCK OIL CORP.; OZARK CAR CO.]
OZSL       OZEAN/STENNES LINIEN
OZX	   OZONE CO., INC.