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| A&BC | ALTOONA & BEECH CREEK RAILROAD | |
| A&E | ALTON AND EASTERN RAILROAD | |
| A&ER | ANNAPOLIS & ELK RIDGE RAILROAD | |
| A&K | ALLEGHANY AND KINZUA RAILROAD | |
| A&NE | ABBOTSFORD & NORTH EASTERN RR | |
| A&SL | ADIRONDACK & ST LAWRENCE RR | |
| AA | ANN ARBOR RAILROAD | |
| AAX | AGRICO CHEMICAL CO. | |
| AAAX | AAA WAREHOUSE CORPORATION | |
| AACX | STATE of ALASKA, DEP'T. of NATURAL RESOURCES | |
| AAFZ | AA FERTILIZER | |
| AALX | ADVANCED AROMATICS LP | |
| AAMX | ACFA,ARRENDADORA DE CARROS DE FERROCARRIL,S.A. | |
| AAPV | AMERICAN ASSOCIATION OF PRIVATE RAILCAR OWNERS, INC. | |
| AAR | ASSOCIATION OF AMERICAN RAILROADS | |
| AARE | (RAIL) DEPRE PRODUCT COMPANY | |
| AATX | AMPACET CORPORATION | |
| AAX | AGRICO CHEMICAL CO. | |
| AB | AKRON BARBERTON CLUSTER RAILWAY COMPANY | |
| ABB | AKRON & BARBERTON BELT RAILWAY | |
| ABBX | ABBOTT LABS | |
| ABCK | RETIRED 94-01-26 (017) ATP [Alaska British Columbia Transportation] | |
| ABCX | *(TVAX) TENNESSEE VALLEY AUTHORITY (OLD?) | |
| ABCX | *ABC RAILWAY, INC. | |
| ABFS | ABF FREIGHT SYSTEM, INC. | |
| ABFZ | ABF FREIGHT SYSTEMS, INC. | |
| ABIX | ANHEUSER-BUSCH, INC. | |
| ABL | ALAMEDA BELT LINE | |
| ABLX | RETIRED 92-09-02 ATP (1007)(ART) | |
| ABOX | (RBOX) RAILBOX COMPANY | |
| ABPR | Aberdeen and Briar Patch Railway | |
| ABRX | *ADRIAN & BLISSFIELD RAILROAD | |
| ABRX | *AB RAIL INVESTMENTS INC. | |
| ABTX | (NATX) G.E. RAILCAR SERVICES (ABBOTT LABS-Lessee) | |
| ABWX | ASEA BROWN BOVERI, INC. | |
| AC | *ALGOMA CENTRAL | |
| AC | *ATLANTIC CITY RAILROAD | |
| ACAX | ALLIED CHEMICAL DIV of CANADA (ALLIED CORPORATION) | |
| ACBL | AMERICAN COMMERCIAL BARGE LINES, INC. | |
| ACBX | SCANDINAVIAN OIL CO. | |
| ACCX | CONSOLIDATION COAL COMPANY | |
| ACDX | ALLIED CHEMICAL CO. | |
| ACEF | A C E FREIGHT INC | |
| ACEX | *ACE COGENERATION COMPANY | |
| ACEX | *BLUE CIRCLE ATLANTIC INC. | |
| ACFX | ACF INDUSTRIES, INC. | |
| ACFZ | ACF INDUSTRIES, INC. | |
| ACGX | SUBURBAN PROPANE LP [ACME GAS CORPORATION] | |
| ACHX | AMERICAN CYANAMID COMPANY | |
| ACIS | ALGOMA CENTRAL | |
| ACIX | *GREAT LAKES CHEMICAL CORP. | |
| ACIX | *ARKANSAS CHEMICALS, INC. | |
| ACJR | ASHTABULA CARSON & JEFFERSON RAILROAD | |
| ACJU | AMERICAN COASTAL LINES JOINT VENTURE INC. | |
| ACJY | ASHTABULA CARSON & JEFFERSON RAILROAD | |
| ACL | CSX TRANSPORTATION, INC. [ATLANTIC COAST LINE] | |
| ACJU | AMERICAN COASTAL LINES, JOINT VENTURE, INC. | |
| ACLU | ATLANTIC CONTAINER LINE LTD | |
| ACLX | AMERICAN CAR LINE COMPANY | |
| ACMX | VOITH HYDRO, INC. | |
| ACNU | *AKZO Chemie BV | |
| ACNU | *CUSTOM CONTAINERS OF AMERICA | |
| ACOU | ASSOCIATED OCTEL CO., LTD. | |
| ACOX | *CHRYSLER RAIL TRANSPORTATION CORPORATION | |
| ACOX | *AURORA COOPERATIVE ELEVATOR CO. | |
| ACPX | *CGTX (?) [AMOCO OIL CO.] | |
| ACPX | *AMOCO CANADA PETROLEUM COMPANY LTD. | |
| ACPZ | AMERICAN CONCRETE PRODUCTS COMPANY | |
| ACR | ALGOMA CENTRAL RAILWAY | |
| ACRC | RETIRED 92-04-07 (173) ATP[Andalusia & Conecuh Railroad] | |
| ACRR | ALLEGANY CENTRAL RAILROAD | |
| ACRX | AMERICAN CHROME & CHEMICALS INC. | |
| ACSU | ATLANTIC CARGO SERVICES | |
| ACSX | (Owner) FIRST UNION PROPERTIES, INC.(Allied Chemical, Lessee) | |
| ACSZ | AMERICAN CARRIER EQUIPMENT | |
| ACTC | ASSOCIATED CONTAINER TRANSPORTATION (USA) | |
| ACTP | ASSOCIATED CONTAINER TRANSPORTATION (USA) | |
| ACTQ | ASSOCIATED CONTAINER TRANSPORTATION (USA) | |
| ACTR | ASSOCIATED CONTAINER TRANSPORTATION (USA) | |
| ACTS | ASSOCIATED CONTAINER TRANSPORTATION (USA) | |
| ACTT | ASSOCIATED CONTAINER TRANSPORTATION (USA) | |
| ACTU | ASSOCIATED CONTAINER TRANSPORT | |
| ACTW | ASSOCIATED CONTAINER TRANSPORTATION (USA) | |
| ACTX | (Owner)FIRST UNION PROPERTIES, INC. [ALLIED CHEMICAL CO.] | |
| ACDX | ALLIED CHEMICAL COMPANY (ALLIED CORPORATION) | |
| ACTX | ALLIED CHEMICAL COMPANY (ALLIED CORPORATION) | |
| ACTZ | AEPX COAL TERMINAL | |
| ACUU | ACUGREEN LTD | |
| ACWR | ABERDEEN, CAROLINA & WESTERN RAILWAY CO. | |
| ACWZ | UNION PACIFIC [CHICAGO & NORTH WESTERN TRANS CO] | |
| ACXU | ATLANTIC CARGO | |
| ACXX | ANDERSON COLUMBIA CO., INC. | |
| ACY | NORFOLK SOUTHERN[Akron, Canton & Youngstown RR.] | |
| AD | ATLANTIC AND DANVILLE RY. | |
| ADBF | ADRIAN & BLISSFIELD RAILROAD COMPANY | |
| ADCU | FLEXI-VAN LEASING, INC. | |
| ADCX | ADIRONDACK SCENIC RR. [ADIRONDACK CENTENNIAL] | |
| ADEZ | ADDISON ELEVATOR CO. | |
| ADIR | ADIRONDACK RAILWAY | |
| ADIZ | ADM INDUSTRIES | |
| ADKU | AGA A/S | |
| ADLE | MILLER MOTOR EXPRESS INC | |
| ADM | ARCHER DANIELS MIDLAND CO. | |
| ADMX | ADM TRANSPORTATION CO. (Archer-Daniels-Midland, Lessee) | |
| ADMZ | ADM MILL | |
| ADN | *ASHLEY, DREW & NORTHERN | |
| ADN | *ARKANSAS LOUISIANA & MISSISSIPPI RAILROAD CO. | |
| ADPZ | ADM PROCESSING | |
| ADRC | ADIRONDACK RAILWAY CORP. | |
| ADRX | *(OBSOLETE?1956)AMERICAN REFRIGERATOR TRANSIT CO. | |
| ADRX | *ADDELESTON RECYCLING CORP. | |
| ADRX | ADDELESTON RECYCLING CORPORATION | |
| ADSH | ADMIRAL SHIPPING | |
| ADSX | ANDREW MERRILEES LIMITED | |
| ADUE | ADVANCE-UNITED EXPRESS WAYS | |
| ADWZ | ADVANCE WARNING | |
| AEC | NORFOLK SOUTHERN[SOUTHERN] [Atlantic & East Carolina RY] | |
| AECX | ASSOCIATED ELECTRIC COOPERATIVE, INC. | |
| AEFR | AURORA ELGIN & FOX RIVER | |
| AEIC | ALCO IMPORT-EXPORT | |
| AEIX | ALAN ESLISK | |
| AEIZ | (FRLN) FARRELL LINES INC. | |
| AEPU | AMERICAN LINES INC. | |
| AEPX | AMERICAN ELECTRIC POWER SERVICE CORPORATION | |
| AEPZ | AEP COAL TERMINAL | |
| AERC | ALBANY & EASTERN RAILROAD | |
| AESX | (NATX) G.E. RAILCAR SERVICES(A.E.Staley Mfg.,Lessee)[North American Car Corp] | |
| AEVX | AKZO COATINGS INC. | |
| AEX | THE ANDERSONS | |
| AF | ALABAMA & FLORIDA RAILWAY, INC. | |
| AFCU | AFRAM LINES, LTD. | |
| AFCX | ATEL LEASING CORP. | |
| AFCZ | AFRAM LINES, LTD. | |
| AFEX | FARMERS ELEVATOR CO. of ARTHUR, N.D. | |
| AFIU | ABS INDUSTRIAL VERICATION INC. | |
| AFIX | FIXCOR INDUSTRIES INC. | |
| AFIZ | AGMARK FOODS | |
| AFLR | ALABAMA & FLORIDA RAILROAD | |
| AFPX | FIBERS & PLASTICS DIVISION (ALLIED-SIGNAL, INC.) | |
| AFRC | AMERICAN FREIGHTWAYS CO | |
| AFTX | RETIRED 91-03-05 FET (0057)[American Freedom Train] | |
| AG | *ABBEVILLE - GRIMES RWY (A&G RAILROAD, L.L.C.) | |
| AG | *GALVESTON RAILROAD L.P. | |
| AGCR | ALAMO GULF COAST RAILROAD | |
| AGCX | *ALBERTA GAS CHEMICALS LTD. | |
| AGCX | *(PROX) PROCOR LIMITED [VENDOME TANK CAR CO.] | |
| AGEX | A.G. PIPE LINES, INC. | |
| AGFX | ANCHOR GAS & FUEL CO. | |
| AGHX | AGRIUM U.S. INC. | |
| AGIX | AGRI FINANCIAL SERVICES, INC. | |
| AGLF | ATLANTIC AND GULF RAILROAD COMPANY, INC. | |
| AGLX | *ANDREWS PETROLEUM, INC. | |
| AGM | ALABAMA MARBLE, Div. of Georgia Marble | |
| AGMX | *TERRA NITROGEN L.P. | |
| AGMX | AGRICULTURAL MINERALS L.P. | |
| AGMZ | AG MAX CORPORATION | |
| AGOZ | AG ONE | |
| AGPX | *AG PROCESSING CORPORATION | |
| AGPX | *CHICAGO FREIGHT CAR LEASING CO | |
| AGPZ | A.G. PROCESSING CO. | |
| AGR | ALABAMA & GULF COAST RWY. | |
| AGRD | A & G RAILROAD, L.L.C. (Abbyville-Grimes) | |
| AGRI | AGRI INDUSTRIES | |
| AGRX | AGRIFOS L.L.C. | |
| AGRZ | AGRA PROCESSING | |
| AGS | NORFOLK SOUTHERN [SOUTHERN] [Alabama Great Southern RR] | |
| AGTX | AMERIGAS PROPANE LP. | |
| AGYX | CENTREX CONSTRUCTION PRODUCTS (AMERICAN GYPSUM CO.) | |
| AHCX | ARCADIAN CORPORATION | |
| AHMX | *ALTOS HOMOS de MEXICO SA de CV | |
| AHMX | *ACF INDUSTRIES - SHIPPERS CAR LINE DIV. | |
| AHT | RETIRED 93-11-08 ATP (039) [ALASKA HYDRO TRAIN] | |
| AHTL | A. & H. TRUCK LINE, INC. | |
| AHW | *FOX VALLEY & WESTERN, LTD. | |
| AHW | *AHNAPEE & WESTERN RAILWAY (Out of operation 9/11/92) | |
| AHWZ | FOX VALLEY & WESTERN, LTD. | |
| AIA | AIRCO ALLOY | |
| AICX | *ADDLESTONE INTERNATIONAL CORPORATION | |
| AICX | *HOEGANAES CORP. | |
| AIDU | ALBERMARLE CORPORATION | |
| AIDX | A.I. DUPONT CO. | |
| AIEU | AVIATION IMPORT EXPORT, INC. | |
| AINX | TTX COMPANY - ACORN DIVISION | |
| AIPX | ATLAS IRON PROCESSORS, INC. | |
| AIRX | AMERICAN INTERNATIONAL RAIL SERVICES LLC | |
| AITU | WESTERN INTERMODAL | |
| AJ | ALMA & JONQUIERES RY. | |
| AJCU | AUSTRALIA JAPAN CONTAINER LINE | |
| AJPX | NORTH AMERICAN CHEMICAL | |
| AKDN | ACADIANA RAILWAY COMPANY | |
| AKER | AKERS MOTORS LINE INC | |
| AKFX | AKF CORP. | |
| AKLU | K LINE | |
| AKMD | *ARKANSAS MIDLAND RAILROAD CO. | |
| AKMD | *KANSAS MIDLAND RAILROAD CO. | |
| AKMX | HELM FINANCIAL CORP. | |
| AKRN | AKRON-CHICAGO INC | |
| AKZX | AKZO NOBEL CHEMICALS INC. | |
| AL | ALMANOR RAILROAD | |
| ALA | ALABAMA & GULF COAST RAILWAY | |
| ALAB | ALABAMA RAILROAD COMPANY, INC. | |
| ALAX | EQUISTER CHEMICALS [OCCIDENTAL CHEMICAL CORP., ALATHON POLYMERS DIV.] | |
| ALBR | ALBANY BRIDGE RAILROAD | |
| ALBX | ALBERT CITY ELEVATOR | |
| ALBY | ALBANY PORT RAILROAD | |
| ALCC | AGR. DIV., ALLIED CHEMICAL CORP. | |
| ALCo | AMERICAN LOCOMOTIVE COMPANY | |
| ALCX | ALCAN SMELTERS & CHEMICAL, LTD. - CANADA | |
| ALEX | AGRI FINANCIAL SERVICES, INC. | |
| ALLA | ALL-AMERICAN TRANSP INC | |
| ALLX | ALLIANCE MACHINE COMPANY | |
| ALM | ARKANSAS LOUISIANA & MISSISSIPPI RAILROAD COMPANY | |
| ALMX | TRINITY RAIL MANAGEMENT [(MCHX) TRANSCISCO LEASING COMPANY] | |
| ALNX | ALBERTA GOVERNMENT | |
| ALPX | ALBERTA GOVERNMENT | |
| ALQS | ALIQUIPPA & SOUTHERN RAILROAD [LTV Steel] | |
| ALRX | ALABAMA RIVER PULP COMPANY | |
| ALS | ALTON & SOUTHERN RAILWAY | |
| ALSS | ALCOA STEAMSHIP CO INC | |
| ALSX | ALBIS CANADA, INC. | |
| ALTU | VTG VEREINIGTE TANKLAGER U TRANSPORTMITTEL GMBH | |
| ALTX | SOUTHERN ILLINOIS RAILCAR INC. [(ACL) ARMOUR TANK LINES] | |
| ALUX | ALUMAX OF SOUTH CAROLINA, INC. | |
| ALWX | GENERAL ELECTRIC RAILCAR SERVICES CORP. | |
| ALY | ALLEGHENY & EASTERN RAILROAD, INC. | |
| AM | ARKANSAS & MISSOURI RAILROAD COMPANY | |
| AMAX | AMAX COAL COMPANY | |
| AMBU | AMBER LINE, INC. | |
| AMBX | AMERICAN BOILER WORKS INC. [AMHERST INDUSTRIES] | |
| AMC | AMADOR CENTRAL RAILROAD | |
| AMC | ARKANSAS LOUISIANA & MISSISSIPPI RR | |
| AMCX | AMOCO CHEMICALS COMPANY | |
| AMCZ | *AMC CHEMICAL | |
| AMCZ | *INTERBULK, INC. | |
| AMEX | ALBAMEX [ALIMENTOS BALANCEADOS de MEXICO] | |
| AMFU | AMPHIBIOUS CONTAINER LEASING | |
| AMGX | AMG RESOURCES CORPORATION | |
| AMHR | LANDISVILLE RAILROAD, INC. | |
| AMIU | AMERICAN MARINE INDUSTRIES | |
| AMIX | RAILCAR LEASING SPECIALISTS, INC. | |
| AMIZ | AMERICAN MARINE INDUSTRIES | |
| AMLX | AMERICAN RAILCAR CO. | |
| AMMF | ADMIRAL MERCHANT MTR FTR | |
| AMMU | HYUNDAI | |
| AMMX | KENTUCKY-TENNESSEE CLAY CO. [Cyprus Industrial Minerals ] | |
| AMOX | AMOCO OIL COMPANY [AMERICAN OIL CO.] | |
| AMOZ | AMOCO OIL COMPANY | |
| AMNX | AMERICAN RAILCAR LEASING PARTNERS | |
| AMPX | (NATX) G.E. RAILCAR SERVICES(AMALGAMAIZE CO., Lessee) | |
| AMPZ | ADM PLANT | |
| AMQP | AMIQUIP | |
| AMRX | *CONSOLIDATED OIL & TRANSPORTATION CO. | |
| AMRX | *AMEROPAN RAILCAR CORP. [American Refrigerator Transit Co.] | |
| AMSX | ALLTRANS MANAGEMENT SERVICES CORP | |
| AMTK | AMTRAK - NATIONAL RAILROAD PASSENGER CORP., NEC | |
| AMTZ | AMTRAK | |
| AMWX | AMWAY CORP | |
| AMXU | AMERICAS MARINE EXPRESS, INC. | |
| AN | AN RAILWAY LLC (APALACHICOLA NORTHERN RAILROAD) | |
| ANAU | ALLIANCE NAVIGATION LINE, INC. | |
| ANAX | *EXCEL TRANSNATIONAL, INC. | |
| ANAX | *GENERAL ELECTRIC RAILCAR SERVICES CORP. | |
| ANBX | ANBEL CORPORATION (NON-REV - PSNGR CARS) | |
| ANCX | AMERICAN NORIT COMPNAY, INC. | |
| ANDW | ANDREW & PIERCE INC | |
| ANDX | ANDESITE ROCK CO. | |
| ANKX | A & K RAILROAD MATERIALS, INC. | |
| ANR | ANGELINA & NECHES RIVER RAILROAD COMPANY | |
| ANSX | ANSCO INVESTMENT CO. | |
| ANYX | NOT TO BE ASSIGNED PER ICG PER AJM 84/07/12 | |
| ANZL | AUSTRALIAN NEW ZEALAND LINES | |
| AO | ADIRONDACK ORE MINES (REPUBLIC STEEL) | |
| AO&M | ASHLAND ODANAH & MARENGO RAILWAY | |
| AOCU | THE ASSOCIATED OCTEL CO. LTD | |
| AOCX | ALUMINUM COMPANY OF AMERICA | |
| AOIX | ASHLAND PETROLEUM CO. | |
| AOK | ARKANSAS-OKLAHOMA RR | |
| AOSZ | A.O. SMITH INDUSTRIES | |
| AOUX | ALBERTA & ORIENT GLYCOL COMPANY LIMITED | |
| AOX | TIDE WATER ASSOCIATED OIL CO. | |
| APA | APACHE RAILWAY COMPANY | |
| APAX | *WEST PENN POWER CO | |
| APAX | *CIMENTOS APASCO S.A. de C.V. | |
| APCC | ALL POINTS CONTAINER CORP. | |
| APCU | AMERICAN PRESIDENT LINES, LTD. | |
| APCX | ALLIED PRODUCTS CO. [ALLIED LIME COMPANY] | |
| APD | ALBANY (NY) PORT DISTRICT | |
| APEX | APEX TANK CAR LINE | |
| APIX | COMMONWEALTH PLAN, INC.(Air Products & Chemicals, Leesee) | |
| APLA | APOLLO AIR FREIGHT CORP | |
| APLS | AMERICAN PRESIDENT LINES - WATER CARRIER | |
| APLU | AMERICAN PRESIDENT LINES,LTD. | |
| APLX | APL LAND TRANSPORT SERVICES, INC. | |
| APLZ | AMERICAN PRESIDENT LINES,LTD. | |
| ARMN | MISSOURI PACIFIC RAILROAD | |
| APMU | MAERSK LINES | |
| APMX | AIR PRODUCTS MANUFACTURING CO. | |
| APNC | APPANOOSE COUNTY RAILROAD, INC. | |
| APOX | ALABAMA POWER COMPANY | |
| APOZ | ALABAMA POWER COMPANY | |
| APPX | APOLLO AIR FREIGHT CORP [Merchants Despatch Transportation] | |
| APRR | ALLEGHENY PORTAGE RAILROAD | |
| APRX | AIR PRODUCTS AND CHEMICAL INC | |
| APTX | AIR PRODUCTS AND CHEMICALS, INC. | |
| APWX | APPALACHIAN POWER COMPANY | |
| APXX | ALBERTA PRAIRIE RAIL EXCURSIONS | |
| APZ | AIR PACK | |
| AQCX | AQUA-CHEM INC., CLEVER BROOKS DIV | |
| AR | ABERDEEN & ROCKFISH RAILROAD | |
| ARA | ARCADE & ATTICA RAILROAD CORP | |
| ARAL | ARABIAN STEAMSHIP LINES | |
| ARAM | ARABIAN SHIPPERS | |
| ARC | ALEXANDER RAILROAD | |
| ARCX | *ALASKA RAILCAR CO. | |
| ARCX | *(RPSX) ARIZONA RAIL CAR, INC | |
| ARDC | ADIRONDACK RAILWAY | |
| ARDP | UP [MISSOURI PACIFIC RAILROAD (Leased thru ART from E.I. duPONT)] | |
| ARDU | CATU CONTAINERS S.A. | |
| ARE | A&R LINE, INC. | |
| AREX | AEROPRES CORPORATION | |
| ARGL | ARGENTINE LINES | |
| ARGX | ASSOCIATED RAILCAR INC. | |
| ARHU | CATU CONTAINERS S.A. | |
| ARHX | ARCH MINERAL CORPORATION | |
| ARIS | ARISON SHIPPING COMPANY | |
| ARIX | *AIRCO INDUSTRIAL GASES-A DIVN OF AIRCO INC | |
| ARIX | *BOC GASES | |
| ARLX | ARMOUR AND CO. [ARMOUR REFRIGERATOR LINE (ACL)] | |
| ARMH | UP [(DKS) MISSOURI PACIFIC (Leased thru ART from Miller Brewing)] | |
| ARMN | UP [MISSOURI PACIFIC RAILROAD] | |
| ARMX | AMERICAN RAIL & MARINE CORPORATION | |
| ARMZ | ARMASAL LINE-American Rail & Marine Corp. | |
| AROX | (GATX) RETIRED 94-07-01 ATP (1041) [AIR REDUCTION CO.] | |
| AROZ | AGROCK | |
| ARPX | ARCO PRODUCTS CO., DIV OF ATLANTIC RICHFIELD COMPANY | |
| ARPZ | ALABAMA RIVER PLANT | |
| ARR | ALASKA RAILROAD CORPORATION | |
| ARRG | ALTRA RAILROAD | |
| ARRX | ANACONDA MINERALS CO. | |
| ARSX | ARISTECH CHEMICAL CORP. [SHIPPERS CAR LINE-ACF] | |
| ART | AMERICAN REFRIGERATOR TRANSIT CO. | |
| ARTU | CATU CONTAINERS S.A. | |
| ARTX | ARTRAIN | |
| ARW | KANSAS CITY SOUTHERN RWY [ARKANSAS WESTERN RY.] | |
| ARWX | ALABAMA RIVER WOODLANDS, INC. | |
| ARZC | ARIZONA & CALIFORNIA RAILROAD COMPANY | |
| AS | ABILENE & SOUTHERN RWY. | |
| ASAB | THE BAY LINE RAILROAD [ATLANTA & ST. ANDREWS BAY RY] | |
| ASCX | *ARMCO STEEL COMPANY, L.P. | |
| ASCX | *ALGOMA STEEL CORP. LTD. | |
| ASDA | ASBESTOS & DANVILLE | |
| ASDX | ALLIED SERVICES DIV. of ALLIED EQUITIES CORP. | |
| ASEX | ARMOUR STOCK EXPRESS (ACL) | |
| ASFX | AMERICAN STEEL FOUNDRIES | |
| ASGX | ASH GROVE CEMENT CO. RETIRED 91-03-05 FET (ACI1202) [Anchorage Sand & Gravel Co.] | |
| ASHU | MARITAINER FRANCE SA | |
| ASHX | GENERAL AMERICAN TRANSPORTATION (Ashland Oil Co.,Lessee) | |
| ASML | ATLANTA, STONE MOUNTAIN & LITHONIA RY. | |
| ASMX | ASARCO MEXICANA, S.A. | |
| ASR | ALLEGHENY SOUTHERN RAILROAD | |
| ASR | ADIRONDACK SCENIC RAILROAD | |
| ASRX | *AMSTAR CORP. | |
| ASRX | *DOMINO SUGAR COMPANY | |
| ASRY | ASHLAND RAILWAY, INC. (OHIO) | |
| ASRZ | AGRI/SHARE COOPERATIVE | |
| ASTX | ASARCO INCORPORATED | |
| ASTZ | ACME STEEL | |
| ASYX | AVONDALE SHIPYARDS INC. | |
| ATAX | ALAMEDA CORRIDOR TRANSPORTATION AUTHORITY | |
| ATC | ASSOCIATIONS TRAILER CAR CO | |
| ATCO | ARNOLD TRANSIT | |
| ATCR | ATCS TESTING & FIELD EVALUATION | |
| ATCS | ATCS TESTING & FIELD EVALUATION | |
| ATCT | ATCS TESTING & FIELD EVALUATION | |
| ATCX | SOUTHERN ILLINOIS RAILCAR INC. | |
| TEX | ASPLUNDH TREE EXPERT COMPANY | |
| ATGU | BURLINGTON NORTHERN RAILROAD CO | |
| ATGX | ATEL LEASING CORP. | |
| ATIT | ASSOCIATED TRANSPORT INC | |
| ATIU | SOCIETE AUXILLAIRE DE TRANSPORT ET D'INDUSTRIES | |
| ATLT | AT&L RAILROAD CO., INC. | |
| ATLU | AMERICAN MARINE INDUSTRIES | |
| ATLX | *ATLAS MACHINE & IRON WORKS, INC. | |
| ATLX | *ARMOUR TANK LINE (ACL) (OBSOLETE?) | |
| ATLZ | AMERICAN MARINE INDUSTRIES | |
| ATMX | U.S. ENERGY RESEARCH & DEVELOPMENT ADM. - Alburquerque Oper. | |
| ATOK | ATOCHEM | |
| ATOU | ATOCHEM | |
| ATRW | ANTHRACITE RAILWAY | |
| ATRX | ATLANTA RAILCAR COMPANY | |
| ATSC | ALASKA TRAIN SHIP CORP. | |
| ATSF | BURLINGTON NORTHERN AND SANTA FE [ATCHISON, TOPEKA & SANTA FE] | |
| ATST | APOLLO AIR FREIGHT CORP | |
| ATT | ACE TRANSPORTATION COMPANY INC. | |
| ATTX | TTX COMPANY - TRAILER TRAIN CO. | |
| ATW | ATLANTIC AND WESTERN RAILWAY, L.P. | |
| AUCL | AUCLAIR TRANSPORTATION INC | |
| AUCX | AUTO-TRAIN CORPORATION | |
| AUG | RETIRED 94-04-08 ATP (0044)AUGUSTA RAILROAD | |
| AUNW | AUSTIN RAILROAD CO., INC.D/B/A AUSTIN & NORTHWESTERN | |
| AUS | AUGUSTA & SOMMERVILLE RAILROAD | |
| AUT | AUTO LINER CORP | |
| AVAL | AVAILCO EQUITY CORP. | |
| AVAZ | CSX TRANSPORTATION, INC. | |
| AVCX | AVCO AEROSTRUCTURES | |
| AVR | ALLEGHENY VALLEY RAILROAD | |
| AVL | AROOSTOOK VALLEY RAILROAD | |
| AVLU | ALLIED VAN LINES | |
| AVR | ALLEGHENY VALLEY RAILROAD COMPANY | |
| AVSX | ABILENE & SMOKEY VALLEY RAILROAD | |
| AW | AHNAPEE & WESTERN RY | |
| AWCX | AIRCO WELDING PRODUCTS - A DIVN OF AIRCO INC | |
| AWDX | ATLANTIC OF NEW YORK INCORPORATED | |
| AWIX | ALBRIGHT & WILSON AMERICAS INC. | |
| AWP | CSX TRANSPORTATION [SEABOARD] [ATLANTA & WEST POINT RR] | |
| AWW | ALGERS, WINSLOW & WESTERN | |
| AWZZ | MCCLOUD RAILWAY [AHNAPEE & WESTERN] | |
| AXCU | ACE TRANSPORTATION COMPANY INC. | |
| AYSS | ALLEGHENY & SOUTH SIDE | |
| AYSW | AYERS STEAMSHIP CO INC | |
| AZCR | ARIZONA CENTRAL RAILROAD INC. | |
| AZCX | AZCON CORPORATION | |
| AZER | ARIZONA EASTERN RAILWAY | |
| AZEX | ARIZONA ELECTRIC POWER COOP.,INC. | |
| AZMX | ARIZONA RAILWAY MUSEUM |