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Baltimore & Ohio (B&O): Diesel Roster (All-Time)

Published: March 13, 2025

By: Adam Burns

The Baltimore & Ohio's diesel locomotive roster was initially an eclectic array of road-switcher models from all of the major builders, except General Electric (the railroad did own a few GE switchers).

However, by the 1950s it was largely a loyal Electro-Motive customer, purchasing large batches of first-generation cab and GP units. Due to severe financial constraints by the 1950s, the railroad went nearly ten years without acquiring new locomotives.

That all changed with the Chesapeake & Ohio's acquisition in early February of 1963. The C&O was a very healthy company and its infusion of cash enabled the B&O; to purchase large batches of second-generation power such as GP30's, GP35's, GP38's, GP40's, GP40-2's, and more.

The final new locomotives to wear any kind of "B&O" markings were a batch of SD50's that rolled of La Grange in 1984 wearing the Chessie System livery.

From a historical perspective the B&O had been fascinating line to railfan dating back to the late steam era with big 2-8-8-4 EM-1's and 2-10-2 "Big Sixes" working Sand Patch, and 4-8-2's hustling fast freights through the Midwest.

This enthusiasm continued into the diesel era as the railroad operated a variety of locomotives, ranging from Electro-Motive's very early EA passenger model to Baldwin's RF16 and Alco's stylish FA freight units.

Photos

91091923872636512431h518069709789.jpgBaltimore & Ohio FA-2's head east past the depot at Brunswick, Maryland during the 1950s. American-Rails.com collection.

Early History

The Baltimore & Ohio enjoyed many firsts throughout its history, from the first common-carrier railroad chartered in 1827 to the first employing air-conditioning in 1930 when dining car Martha Washington was unveiled with the newfangled accommodation.

The B&O was also the first to implement electrification in main line applications when it opened its Baltimore Belt Railroad in 1895.

This 4-mile stretch of railroad operated through Howard Street Tunnel in Baltimore and closed the gap between the B&O's railroad’s New York-Washington (north-south) and Washington – Cumberland (east-west) main lines.

It was electrified to eliminate smoke through the downtown area. This electrification lasted until 1952 when the B&O had accumulated enough diesels to discontinue electric operations.

In another move to eliminate steam locomotives in an urban setting and comply with a city's smoke abatement ordinance, the B&O put into service its first diesel in 1925.

That year it acquired a 60-ton, 300 horsepower boxcab produced by American Locomotive/General Electric/Ingersoll-Rand to carry out switching chores along its confined yard at 26th Street in New York City, situated on Manhattan's West Side.

Then, in 1935 the railroad acquired Electro-Motive's early boxcab design for main line service, an 1,800 horsepower testbed unit numbered 50.

It tested on Sand Patch and spent time pulling the Royal Blue between Washington and New York before being transferred to Abraham Lincoln on subsidiary Alton Railroad.

The railroad came back to Electro-Motive in 1937 for the streamlined variants of these boxcabs known as the EA model. The cab units featured a beautiful sweeping carbody with a slanted nose.

They went to work on the flagship Capitol Limited that year and the B&O was quite pleased with the units. From this point forward the railroad was a loyal EMD customer although did experiment with some models from other builders.

You could find Baldwins, FMs, and Alcos in yard work while the B&O even tried out a few of the latter's dual-service cab model, the FPA-2.

After the War Production Board eased restrictions on buying new diesels during World War II, the B&O picked up its efforts to fully dieselize its locomotive fleet in the late 1940s.

During the 1950s the Baltimore & Ohio purchased large batches of GP units, like the GP7, and even tried out Baldwin's unique AS616 road-switcher.

American Locomotive (Alco)

Model Type Road Number (1st) Road Number (2nd) Road Number (3rd) Order Number Serial Number Date Built Quantity Notes
Boxcab*1--S1484Unknown19251-
S1222-2238010-80119150-9151Unknown70057, 726948/1944-9/19442-
S1224-2278012-80159152-9155S194272835-72836, 72840-7284110/1944-11/19444-
S4468-474, 542-545-9008-90182096181320-813304/195511-
S2475-481-9019-9025S188470248-702544/1943-11/19437-
S2482-487-9026-9031S191571301-71303, 71309-713114/1943-11/19436-
S2488-492-9032-9036Unknown76175-761844/1944-7/19445-
S2493-496-9037-9040S194372727, 72892-728948/1944-1/19454-
S2497-508-9041-9052S194372903-72909, 72912-729162/1945-5/194512-
S2509-510-9053-90542024376160-761618/19482-
S2511-520-9055-90642024376175-761849/1948-10/194810-
S2521-524-9065-90682024376202-7620511/19484-
S2525-533-9069-90772024376500-7650811/1948-12/19489-
S4534-541-9000-9007Unknown80954-80959, 80962-8096311/1953-12/19532-
FA-2801-805 (Odds), 801A-805A (Odds)4000-4005-Unknown78188-7819310/1950-11/19506-
FB-2801x-809x (Odds)5000-5003-Unknown78198-78200, 7850210/1950-1/19514-
FA-2807, 807A4006-4007-Unknown78266-7826711/19502-
FPA-2809-817 (Odds), 809A-817A (Odds)4008-4017-2055178483-7849212/1950-1/195110-
FB-2809x-817x (Odds)**5004-5008-Unknown78201, 78498-7850112/1950-1/19515-
FB-2817Ax5009-Unknown784971/19511-
FA-2819-823 (Odds), 819A-823A (Odds)4018-4023-2077479710-797151/1952-2/19526-
FB-2819x-823x (Odds)5010-5012-Unknown79760-797621/19523-
FA-2825-827 (Odds), 825A-827A (Odds)4024-4027-2077479744-79746, 799553/19524-
FB-2825x-835x (Odds)5013-5018-Unknown80010-80013, 80030-800314/1952, 4/19536-
FA-2829-831 (Odds), 829A-831A (Odds)4028-40314128-41312077479956-799593/1952-4/19524-
FA-2833-837 (Odds), 833A-837A (Odds)4032-40374132-41372084879984-799894/1953-5/19536-
FB-2837x, 837Ax5019-5020-Unknown80032-800335/19532-
RSD12--2007-2016Unknown81943-819524/1956-5/195610Ex-Chesapeake & Ohio #6700-6709
RS1--9185-91862087180851-808529/19532Ex-Chesapeake & Ohio #5114-5115
S49078-9097--2102381860-818794/1956-6/195620-
S49098-9099--2102381971-819726/19562-
S49100-9114--2105581985-819992/1957-8/195715-
S29115-9144-----30Ex-Chesapeake & Ohio***
S29145-9149-----5Ex-Lehigh Valley****
S29160-9165, 9171-9184-----20Ex-Chesapeake & Ohio*****

*  A joint GE/Alco/Ingersoll-Rand project.  The boxcab employed 300 horsepower and could produce 7,900 pounds of tractive effort at 10.0 mph.  Its top speed was 30 mph.  The trio broke down the work as follows:

  • Alco carried out mechanical work at its Schenectady, New York plant.
  • Ingersoll-Rand supplied the engine from its Phillipsburg, New Jersey plant, and was responsible for sales.
  • General Electric installed all electrical equipment and carried out testing at its Erie, Pennsylvania plant.

** Steam-generator equipped.

*** See Table Below

Baltimore & Ohio Number Chesapeake & Ohio Number Serial Number Date Built
911550267716510/1949
911650297779810/1949
911750167714110/1949
911850397780711/1949
911950177714210/1949
91205004767836/1949
912150287779710/1949
912250427781111/1949
912350437781211/1949
912450357780311/1949
912550277779610/1949
912650307779910/1949
912750377780610/1949
912850237714810/1949
91295054768991/1950
91305050779441/1950
913150447781311/1949
913250387780710/1949
913350407780911/1949
913450417781011/1949
91355001767715/1949
913650247714910/1949
91375008771339/1949
913850137713810/1949
913950027716510/1949
91405009771349/1949
91415010771359/1949
91425003767826/1949
91435007771329/1949
914450147713910/1949

**** See Table Below

Baltimore & Ohio Number Lehigh Valley Number Serial Number Date Built
9145150699528/1942
91461536995510/1942
91471556987810/1943
91481617006810/1949
91491627006911/1949

***** See Table Below

Baltimore & Ohio Number Chesapeake & Ohio Number Serial Number Date Built
91605000767705/1949
91615005771309/1949
91625006771319/1949
916350117713610/1949
916450127713710/1949
916550157714010/1949
917150327780111/1949
917250337780211/1949
917350367780510/1949
917450457782712/1949
917550467782812/1949
917650477794112/1949
917750487794212/1949
91785049779431/1950
91795051779451/1950
91805052768971/1950
91815053768981/1950
91825055769001/1950
91835056769011/1950
91845057769021/1950

Baldwin Locomotive Works (BLW)

Model Type Road Number (1st) Road Number (2nd) Road Number (3rd) Baldwin Serial Number(s) Construction Number(s) Date Built Quantity Notes
DS-4-4-1000376-92501005747787/14/19501-
DS-4-4-1000377-381-9251-92551006-101074788-747927/14/19505-
DS-4-4-1000382-385-9256-92591017-102074799-74800, 74881-748828/23/1950-8/25/19504-
DS-4-4-1000386-399-9260-92731029-104274937-749508/28/1950-10/13/195014-
VO-1000413, 415, 421, 4299221-9224-168-170, 299, 41667649, 67651, 70858, 719908/26/1943-1/24/19454-
VO-1000414, 4169200-9201-169, 17167650, 676528/27/1943, 8/30/19432-
VO-1000417-4209202-9205-218-22170112-7011511/27/1943-12/1/19434-
VO-1000422-4279206-9211-300, 320, 332-33570859, 70879, 71930-719335/8/1944-7/24/19446-
VO-1000428, 430-4329212-9215-415, 417-41971989, 71991, 71426-714271/21/1945-1/28/19454-
VO-1000433-4379216-9220-427-43171333-713372/19/1945-2/25/19455-
DS-4-4-1000438-462-9225-9249707-73173839-7386310/27/1948-12/25/194825-
DS-4-4-1200463-467-9274-9278408-41275961-7596511/11/1953-11/20/19535-
DR-4-4-1500 (A)847, 8494200-4201-29, 3073981, 739846/19492Acquired 3/1955: Ex-Elgin, Joliet & Eastern #700A-701A: Nee-Demonstrators #6001A, #6001A1.
DR-4-4-1500 (A)847x, 849x5200-5201-18-1973982-739836/19492Acquired 3/1955: Ex-Elgin, Joliet & Eastern #700B-701B: Nee-Demonstrators #6001B, #6001B1.
RF16 (A)851-861 (Odds), 851-861A (Odds)4202-4213-1-1274801-74811, 7481611/7/1950-11/30/195012-
RF16 (A)863, 863A4214-4215-13-1474817-7481812/6/19502-
RF16 (A)865, 865A, 867, 869, 8714216-4220-107-11175386-753905/24/1952-5/21/19535-
RF16 (B)865x, 851x, 853x-861x (Odds), 867x-871x (Odds), 867Ax-871Ax (Odds)--40-5275413-75419, 75808-758135/15/1952-5/21/195313-
AS16890-8986207-62162241-2249120-12876096-761045/6/1955-6/30/19559-
AS1689962062240105759662/25/19541-
AS16900-9046200-62042234-223860-6475498-755025/27/1952-6/3/19525-
AS169056205223992754203/27/19531-
AS6162250--83751758/3/19511Built as Chesapeake & Ohio #5555, later became C&O; #2219.

Electro-Motive (EMC/EMD)

Model Type Road Number (1st) Road Number (2nd) Road Number (3rd) Serial Number(s) Order Number Date Built Quantity Notes
SW2--653E15212/19361Baltimore & Ohio Chicago Terminal. Rebuilt as SW1 #199 in May, 1942. Later renumbered again as 8422.
E8A26-32 (Evens), 26A-32A (Evens)1446-14531446-145318675-18682206110/19538-
FTA1A-5A Odds), 1D-5D (Odds)101-111 (Odds)4400-44051633-1638E4708/1942-9/19426-
FTB1B-5B (Odds), 1C-5C (Odds)101x-105X (Odds), 101Ax-105Ax (Odds)5400-54051645-1650E4718/1942-9/19426-
FTA7A-11A (Odds), 7D-11D (Odds)101A-111A (Odds)4406-44111639-1644E4708/1943-10/19436-
FTB7B-11B (Odds), 7C-11C (Odds)107x-111x (Odds), 107Ax-111Ax (Odds)5406-54111651-1656E4718/1943-10/19436-
E9A34-40 (Evens)1454-14571454-145720377-2038020695/19554-
Boxcab50--532E1278/19351This 1,800 horsepower boxcab was first assigned to the New York-Washington, D.C. "Royal Blue" service. It was transferred to the Alton Railroad's "Abraham Lincoln" service in April, 1936. It later became Gulf, Mobile & Ohio #1200; retired in 1956 and now preserved at the Museum Of Transportation in St. Louis.
EA5114331433666E1455/19371Rebuilt as E8Am #1433 (order #7507) in December, 1953.
EB51x-56x2414-24192414-2419667, 669, 768-770, 801E1465/1937-6/19386Rebuilt as E8Bm's #2414-2419 (order #7507) between May, 1953 and January, 1954.
EA52--668E1456/19371Transferred to the Alton Railroad.
E6A52 (2nd)--1094E32210/19401-
EA53-541434-14351434-1435765-766E1891/19381Rebuilt as E8Am #1434-1435 (order #7507) in October, 1953 and January, 1954.
EA55-561436-14371436-1437770, 801E1916/19381Rebuilt as E8Am #1436-1437 (order #7507) between June-August, 1953.
E6A57-591408-14101408-14101091-1093E3229/19403-
E6B57x-59x2407-24092407-24091095-1097E3239/19403-
E6A60-631411-14141411-14141328-1331E3886/1941-7/19414-
E6B60x-63x2410-24132410-24131332-1335E3896/1941-7/19414-
E7A64, 64A, 66, 66A1415-14181415-14181673-1676E4722/19454-
E7A68-80 (Evens), 68A-80A (Evens)1419-14321419-14322897-2910E6429/1945-10/194514-
F3A82-88 (Evens), 82A-86A (Evens)1400-14064637-46434072-4078E7577/19477Steam-generator equipped.
F3B82x-82Ax, 84x-84Ax2400-24035520-55234080-4083E7577/19474-
F3B86x,86Ax, 88x2404-24065524-55264135-4137E7577/19473-
E8A90, 90A, 92, 92A1438-14411463 (See Notes)10231-1023420159/19504#92/#1440 was later renumbered as 1463.
E8A94, 94A, 96, 96A1442-14451442-144512712-1271561629/1950-10/19504-
F3A113-151 (Odds), 113A-151A (Odds)4420-4459-5089-5128E8654/1948-5/194840-
F3A153-151 (Odds), 153A-171A (Odds)-4460-44795089-5128E94011/1948-1/194920-
F7B153x-171x (Odds)5420-54295420-542912283-1229230699/195010-
F7A180-192 (Evens), 180A-192A (Evens)4480-44934480-44937554-7567E10798/1949-10/194914-
F7B180x-184x (Evens), 180Ax-184Ax (Evens)5430-54355430-54357568-7573E10798/1949-9/19496-
F7B186x-192x (Evens), 186Ax-192Ax (Evens)5436-54435436-54438743-8750E10799/19498-
SW1200-215-8400-84151098-1113E3248/1940-9/194016-
SW1217, 216, 218-221-8416-84211601-1606E4625/1940-8/19406Baltimore & Ohio Chicago Terminal
F7A231-237, 239-243 (Odds), 239A-243A (Odds)4494-45034494-450310221-102308/195010-
F7B231x-237x (Odds)5444-54475444-544711709-1171230348/19504-
F7A245-245A, 247-247A4504-45074504-450711705-117088/19504-
F7A249-263 (Odds), 249A-263A (Odds)4508-45234508-452312259-1227430649/1950-10/195016-
F7B249x-263x (Odds)-5448-545512275-1228230649/1950-10/19508-
F7A265-279 (Odds), 265A-279A (Odds)4524-45394524-453912626-12641616110/1950-12/195016-
F7B265-279x (Odds)5456-54635456-546312674-12681616111/1950-12/19508-
F7A281-297 (Odds), 281A-297A (Odds), 361-361A4540-45594540-455912642-1266162071/1951-2/195120-
F7B281x-297x (Odds), 361x5464-54735464-547312682-1269162071/1951-2/195110-
F7A363-363A, 365-365A4560-45634560-456312662-1266561611/1951-2/19514-
F7B363x-363Ax, 365x-365Ax5474-54775474-547712692-12695616112/1950-1/19514-
F7A367-3744564-45714564-457112666-12673616112/1950-1/19518-
F7B367x-374x (Odds), 367Ax-374Ax (Odds)5478-54935478-549312696-12711616112/1950-1/195116-
NW2400-408-9500-95081114-1122E32510/1940-11/19409-
NW2409-411-9509-95111729-1731E4631/19433Baltimore & Ohio Chicago Terminal
NW2550-559-9542-95516673-6682E10869/1948-11/194810-
NW2560-589-9512-95416683-6712E10221/1949-5/194930-
SW9590-597-9600-960715886-1589363662/1952-4/19528Baltimore & Ohio Chicago Terminal
SW9598-603-9608-961319308-19313425812/19536-
SW900625-653-9400-942820384-2041243015/1955-7/195529-
GP7720-7316413-64245613-562418694-1870553019/195312-
GP7740-7463400-34066693-669918687-18693530210/19537-
GP9747-7523417-34126600-660520417-2042253884/19556-
GP9675-690-6425-644020429-2044453934/1955-5/195516-
GP9691-696-6441-644620423-2042853924/19556-
SD7760740018261741064573/19521Ex-Demonstrator #991
SD7761-7647401-74041827-183018683-18686530311/19534-
SD9765-7667405-74061831-183220121-20122537612/19542-
SD97727412183820123538812/19541-
SD9767-7717407-74111833-183720124-20128537612/19545-
SD9773-7747413-74141839-184020451-2045253954/19552-
GP7910-9226400-64125600-561217499-1751162941/195313-
F7A929-945 (Odds)4572-45804572-458015905-1591331221/19529-
F7B929x-945x (Odds)5494-55025494-550215923-1593131221/19529-
F7A929A-945A (Odds)4581-45894581-458915914-1592231221/19529-
F7A947-961 (Odds), 947A-961A (Odds)4590-46054590-460516642-1665731468/195216-
F7B947x-961x (Odds)5503-55105503-551016671-1667831468/19528-
F7A963-975 (Odds), 963A-973A (Odds)4606-46184606-461816658-1667031548/195213-
F7A977-993 (Odds), 977A-993A (Odds)4619-46364619-463617512-1752964671/195318-
F7B977x-993x (Odds)5511-55195511-551917530-1753864671/19539-
E8A1440 (2nd)--1476520158/19511Ex-Chesapeake & Ohio #4006.
E8A1460-1462--14760, 14770, 1477620408/1951-12/19513Ex-Chesapeake & Ohio #4001, #4011, #4017.
E8A1464-1467--14766, 14768, 14771-1477220408/1951-11/19514Ex-Chesapeake & Ohio #4007, #4009, #4012-4013.
GP93413-34186606-6611-22255-2226054908/1956-10/19566-
GP93419-34256612-6618-22418-22424549010/19567-
GP353500-3519--29090-2910977163/1964-4/196420-
GP353540-3559--29372-2939177367/1964-9/196420-
GP353581--31262786312/19651-
GP403684-3699--32644-32659794311/196615-
GP403700-3739--34823-3486271582/1969-4/196940-
GP403740-3764--36721-36745727512/1970-1/197125-
GP403765-3777--37189-3720173012/1971-3/197113-
GP403778-3779--37202-3720373173/19712-
GP383800-3849--33318-33367706010/1967-11/196750-
GP383837 (2nd)--3333580857/197150-
GP404000-4054--38480-3853473408/1971-10/197155-
GP404055-4064--38535-38544735611/197110-
GP40-24100-4162, 1977 (1st), 4164 ("GM50")--7365-1 thru 7365-6573658/1972-11/197265#1977 celebrated the B&O;'s 150th anniversary while "GM50" marked Electro-Motive's 50 years of building locomotives.
GP40-24185-4246--74695-1 thru 74695-62746954/1975-7/197562-
GP40-24247-4256--767034-1 thru 767034-107670342/197710-
GP40-24287-4307--776091-1 thru 776091-217770511/1978-2/197821-
GP40-24308-4311--777051-1 thru 777051-47770513/19784-
GP40-24322-4351--787227-1 thru 787227-307872272/1979-3/197930-
FTA4412-4413--3128-3129E6545/19452Ex-New York, Ontario & Western #806-807.
GP40-24422-4447--807014-1 thru 807014-268070145/1981-6/198126-
F7A4644-4647--11809-1181261186/19504Ex-Bessemer & Lake Erie #701A-704A.
F7A4648-4651--13678-1368130852/1951-3/19514Ex-Bessemer & Lake Erie #708A-711A.
F7A4652-4654--11813-1181561186/19503Ex-Bessemer & Lake Erie #705A-707A.
GP384800-4819--36676-3669580858/1970-12/197020-
NW25061-5064--10382-1038560239/19494Ex-Chesapeake & Ohio #5061-5064.
NW25069--1037060216/19491Ex-Chesapeake & Ohio #5069.
NW25074, 5076, 5079--10375, 10377, 1038060216/1949-8/19493Ex-Chesapeake & Ohio 5074, 5076, 5079.
SW75215--1027460751/19501Ex-Chesapeake & Ohio #5215.
FTB5412-5413--3136-3137E6545/19452Ex-New York, Ontario & Western #806B-807B.
F7B5527-5533--11816-1182261182/19517Ex-Bessemer & Lake Erie #701B-707B.
F7B5534-5537--13685-1368830853/19514Ex-Bessemer & Lake Erie #708B-711B.
F7B5540--1602630972/19521Ex-Chesapeake & Ohio #7519.
GP76405 (2nd)--17504803012/19531-
GP96447-6500--22191-2224454778/1956-10/195654-
GP96498 (2nd)--2362480455/19571-
GP96501-6510--22245-22254548910/195610-
GP96511-6562--22985-2303655195/1957-7/195752-
GP96563-6570--23037-2304455437/19578-
GP96571--2364180465/19571-
GP96572-6598--24356-2438255681/1958-2/195827-
GP96599--2708676151/19621-
GP96650-6658--22101-2210954736/1956-7/19569Ex-Chesapeake & Ohio #6100-6108.
GP96659-6661--22017-2201954679/19563Ex-Chesapeake & Ohio #6109-6111.
GP96662-6683--22021-2204254679/195622Ex-Chesapeake & Ohio #6113-6134.
GP306900-6927--27617-27644762810/1962-11/196228-
GP306928-6976--27645-27693763111/1962-1/196349-
SD357400-7419--29408-2942777387/1964-10/196420-
SD357437-7440--30706-3070978289/19654-
SD407482-7494 (See Notes)7591-7594 (See Notes)-33161-3317379985/196713Among this group, #7482-7490 were transferred to the Jersey Central while #7591-7594 were renumbered as #7591-7594.
SD407497-75007597-7599 (See Notes)-34775-3477871594/19694#7497-#7499 were renumbered as #7597-7599 while #7500 maintained its original number.
SD40-27600-7619--767033-1 thru 767033-207670331/1977-2/197720-
SD20-27700-7704--29413, 29409, 29414, 2941277382/1979-3/19795Ex-Baltimore & Ohio SD35's #7405, #7401, #7406, and #7404; de-rated to 2000 horsepower.
TR3A (Cow)9552, 9555--10253, 1025660187/1949, 10/19492Ex-Chesapeake & Ohio #9552 and #9555; built as C&O; #6500A and #6501A.
TR3B (Calf)9554, 9556--10254-1025560187/19492Ex-Chesapeake & Ohio #9554 and #9556; built as C&O; #6500B and #6500C.
TR3B (Calf)9553, 9557--10257-10258601810/19492Ex-Chesapeake & Ohio #9553 and #9557; built as C&O; #6500B and #6500C.
SW12009614-9621--23360-2336743935/19578-

Fairbanks-Morse (FM)

Model Type Road Number (1st) Road Number (2nd) Road Number (3rd) Construction Number(s) Contract Number(s) Date Built Quantity Notes
H12-44196-197-9720-972112L774-12L775LD1579/19532-
H10-44300-309-9700-970910L86-10L95LD15111/1948-12/194810-
H12-44310-319-9710-971912L392-12L401LD1032/195110-
H16-44906-9076700-6701-16L697-16L598LD14412/19522Leased to the CNJ in November, 1967 and numbered 18-19. Returned to the B&O; the following year, both were to be renumbered as 9735-9736. However, the units were retired and scrapped in January, 1970 prior to this last renumbering.
H16-44925-9266702-67039737-973816L961-16L962LD1784/19552-
H16-449276704973916L969LD1784/19551-
H16-446705-67099740-9743-16L1144-16L1148LD2113/19575#6709 was wrecked prior to its renumbering, which would have been 9744.
H12-449722-9726--12L1089-12L1093LD2134/19575-

General Electric (GE)

Model Type Road Number (1st) Road Number (2nd) Road Number (3rd) Serial Number(s) Date Built Quantity Notes
44-Ton19-208801-88028300-830130470-304719/1950-10/19502-
65-Ton1948810-1807212/19431-
80-Ton1988820-180119/19431-

Lima-Hamilton Locomotives

Lima never gave model names to its diesel line.

Model Type Road Number (1st) Road Number (2nd) Road Number (3rd) Construction Number(s) Order Number(s) Date Built Quantity Notes
1,000 Horsepower Switcher330-331-9366-93679347-93481212-3 thru 1212-412/1949-1/19502-
1,000 Horsepower Switcher332-337-9381-93869347-93481212-5 thru 1212-101/1950-2/19506-
1,000 Horsepower Switcher338-339-9374-93759392-93931214-1 thru 1214-23/19502-
1,200 Horsepower Switcher320-3279376-9383-9468-94751219-12-1912/19508-
1,200 Horsepower Switcher328-3299384-9385-9476-94771219-20-211/19512-
1,200 Horsepower Switcher340-3439386-9389-9478-94811219-22-251/19514-
1,200 Horsepower Switcher344-3529390-9398-9482-94901219-26-342/19519-
1,200 Horsepower Switcher3539399-94911219-353/19511-

Plymouth Locomotive Works

Model Type Road Number (1st) Road Number (2nd) Road Number (3rd) Date Built Quantity Notes
25-Ton258900-1/19261-

Sources

  • Kirkland, John F. Diesel Builders, The:  Volume One, Fairbanks-Morse And Lima-Hamilton. Glendale: Interurban Press, 1985.
  • Kirkland, John F. Diesel Builders, The:  Volume Two, American Locomotive Company And Montreal Locomotive Works. Glendale: Interurban Press, 1989.
  • Kirkland, John F. Diesel Builders, The:  Volume Three, Baldwin Locomotive Works. Pasadena: Interurban Press, 1994.
  • Liljestrand, Robert A. and Sweetland, David R. Baltimore & Ohio Diesel Locomotives: Volume 1, Switchers & Road Switchers. 
  • Mainey, David. Baltimore & Ohio Steam In Color. Scotch Plains: Morning Sun Books, 2001.
  • Reynolds, Kirk and Oroszi, David. Baltimore & Ohio Railroad. Osceola: MBI Publishing, 2000.
  • Schafer, Mike. Classic American Railroads. Osceola: MBI Publishing, 1996.
  • Solomon, Brian.  Electro-Motive E-Units and F-Units: The Illustrated History of North America's Favorite Locomotives.  Minneapolis:  Voyageur Press, 2011.
920527872326k28009727820878.jpgBaltimore & Ohio E6A #62 leads a heavyweight passenger consist westbound over Sand Patch Grade in Pennsylvania during a fall morning in the 1950s. American-Rails.com collection.

In 1958 the B&O had completed dieselization when its final steam locomotives entered retirement. Interestingly, this was also a period when the railroad was struggling financially.

It acquired its first GP30's in 1962 but it wasn't until the C&O's takeover a year later and subsequent cash infusion this acquisition provided that the railroad acquired the new power needed to meet increasing traffic demands.

Its final new power included a fleet of twenty SD50's, rated at 3,600 horsepower, delivered in the Chessie System livery in 1984. By this time CSX Corporation had already been created and the railroad formally disappeared into the new railroad in 1987.

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