| Abbreviation | Railroad Name |
| BOCHY | B&O Chessie
|
| BABY RUTH | Baby Ruth
|
| BADX | Baden Investment Co
|
| BAKELITE | Bakelite
|
| BAKERS | Bakers Choclate
|
| BLW | Baldwin Locomotive Works
|
| BALL | Ball Oil
|
| BE | Baltimore & Eastern
|
| BO | Baltimore & Ohio
|
| BTC | Baltimore Transit Co |
| BAM | Bamberger (elec)
|
| BAR | Bangor & Aroostook |
| BACH | Barre & Chelsea
|
| BARRETT CO | Barrett Co.
|
| BASF | BASF Wyandotte
|
| BH | Bath & Hammondsport
|
| BXN | Bauxite & Northern
|
| BART | Bay Area Rapid Transit
|
| BAY COLONY | Bay Colony
|
| BAY ST MIL | Bay State Milling Co.
|
| BALY | Bayer Corp BALX
|
| BAYLINE | Bayline
|
| BCH | Bc Hydro (Sthrn Rlwy Of Brit Col)
|
| BCLR | BCLR
|
| BEUM | Beaufort & Moorehead
|
| BSLW | Beaumont, Sour Lake & Western
|
| BME | Beaver, Meade & Englewood
|
| BEKINS | Bekins Freight Liner
|
| BML | Belfast & Moosehead Lake
|
| BELL OIL | Bell Oil
|
| BELLEFONTE | Bellefonte Central
|
| BRC | Belt Rlwy Chicago
|
| BEND MILLW | Bend Millwork
|
| BENSON LOG | Benson Log
|
| BEPX | BEPX
|
| BERK | Berkshire Chemical
|
| BMS | Berlin Mills Railroad
|
| BWCX | Berwind White Coal Co.
|
| BLE | Bessimer & Lake Erie
|
| BETHLEHEM | Bethlehem Steel
|
| BVRSO | Bevier & Southern
|
| BEYER-GARR | Beyer-Garratt
|
| BCT | Big Creek & Telocaset
|
| BGAR | Bingham & Garfield
|
| BGA | Birmingham |
| BSE | Birmingham & Southeastern
|
| BS | Birmingham Southern
|
| BLACK HILL | Black Hills
|
| BLACK MTN | Black Mountain
|
| BRW | Black River & Western
|
| BLATZ | Blatz Beer
|
| BCIX | Blue Circle Incorperated
|
| BCC | Blue Circule Cement
|
| BC | Blue Comet
|
| RMBN | Blue Mountain & Reading
|
| BRT | Blue Ridge
|
| BMLP | BM&LP
|
| BOEING | Boeing
|
| BOSIE | Boise Cascade
|
| BHS | Bonhomie & Hattiesburg So
|
| BOONE VALL | Boone Valley
|
| BOOTH KELL | Booth Kelly Lumber
|
| BORAXO | Boraxo
|
| BORDENS | Bordens Milk
|
| BOS | Boston |
| BOSA | Boston & Albany
|
| BM | Boston & Maine |
| BER | Boston Elevated Railway |
| BOWMAN | Bowman Dairy
|
| BRACH | Brach's Candy
|
| BVRY | Brandywine Vally
|
| BDB | Breakwater & Deleware Bay
|
| BREYERS | Breyers Ice Cream
|
| BRILL | Brill Car Co
|
| BRIMESTONE | Brimstone
|
| BCOL | British Columbia Railway
|
| BBT | Brooklyn Brd Trans NYC |
| BROWN HOIS | Brown Hoist
|
| BROWNING | Browning Arms Company
|
| BB | Buckingham Branch
|
| BUCYRUS | Bucyrus Crane, Later Bucyrus Erie
|
| BUDD | Budd
|
| BUDWEI | Budweiser Beer
|
| BPRR | Buffalo & Pittsburgh
|
| BCG | Buffalo Creek & Gauley
|
| BCK | Buffalo Creek (* Conrail)
|
| BFRR | Buffalo Ridge
|
| BUC | Buffalo, Union-carolina
|
| BUR | Burlington Motor Carriers
|
| BN | Burlington Northern
|
| BNSF | Burlington Northern Santa Fe
|
| BREX | Burlington Refrig. Express Co.
|
| BRI | Burlington-rock Isl
|
| BAP | Butte, Anaconda & Pacific
|
