GENERAL MOTORS/ELECTRO MOTIVE DIVISION LOCOMOTIVES
Model Year Wheel Horse Notes
Built Arrangement Power
Box Cab 1935 B-B 1800
EA/EB 1937-38 A1A-A1A 1800 Baltimore & Ohio
E1A/E1B 1937-38 A1A-A1A 1800 Santa Fe
E2A/E2B 1937 A1A-A1A 1800 Union Pacific
E3A/E3B 1938-40 A1A-A1A 2000
E4A/E4B 1938-39 A1A-A1A 2000 Seaboard
E5A/E5B 1940-41 A1A-A1A 2000 Burlington
E6A/E6B 1940-42 A1A-A1A 2000
E7A/E7B 1945-49 A1A-A1A 2000
E8A/E8B 1949-54 A1A-A1A 2250
E9A/E9B 1954-64 A1A-A1A 2400
TA 1937 B-B 1200 Rock Island/for Rocket trains
F3A/F3B 1946-49 B-B 1500
F7A/F7B 1949-53 B-B 1500
FP7 1949-53 B-B 1500 slightly longer than F7A/no B-units
F9A/F9B 1953-60 B-B 1750
FL9 1957-60 B-A1A 1750 New Haven/dual power
BL2 1948-49 B-B 1500 "Branch Line" predecessor to GP7 model
GP7 1950-54 B-B 1500
GP9 1954-59 B-B 1750
GP18 1959-63 B-B 1800
SD7 1952-53 C-C 1500
SD9 1954-59 C-C 1750
SDP35 1964-65 C-C 2500
SDP40 1966 C-C 3000
SDP45 1967 C-C 3600
FP45 1967-68 C-C 3600
GP40P 1968 B-B 3000
ALCO DIESEL LOCOMOTIVES
Model Year Wheel Horse Notes
Built Arrangement Power
DL-103 1939 A1A-A1A 2000 Rock Island
DL-105 1940 A1A-A1A 2000
DL-107 1939-42 A1A-A1A 2000
DL-108 1939-42 A1A-A1A 2000 B-unit
DL-109 1941-45 A1A-A1A 2000
DL-110 1941 A1A-A1A 2000 B-unit
PA-1/PB-1 1946-50 A1A-A1A 2000
PA-2/PB-2 1950-53 A1A-A1A 2250
RS-1 1941-60 B-B 1000
RS-2 1946-50 B-B 1500
RS-3 1950-56 B-B 1600
RSC-2 1946-50 A1A-A1A 1500
RSC-3 1950-55 A1A-A1A 1600
RSD-4 1951-52 C-C 1600
RSD-7 1954-56 C-C 2400
RS-11 1956-61 B-B 1800
RS-36 1962-63 B-B 1800
C-420 1963-68 B-B 2000
BALDWIN DIESEL LOCOMOTIVES
Model Year Wheel Horse Notes
Built Arrangement Power
DR-6-4-2000 1946-48 A1A-A1A 2000 B-unit also available
DRX-6-4-2000 1946-48 A1A-A1A 2000 Central of New Jersey/double cab
DR-12-8-3000 1947-48 2-D-D-2 3000
DRS-4-4-1500 1947-50 B-B 1500
DRS-6-4-1500 1946-48 A1A-A1A 1500
RS-12 1951-56 B-B 1200
AS-616 1950-54 C-C 1600
FAIRBANKS MORSE DIESEL LOCOMOTIVES
Model Year Wheel Horse Notes
Built Arrangement Power
Erie Built 1945-49 A1A-A1A 2000 A-units and B-units available
CFA-16-4 1950-53 B-B 1600 B-unit model CFB-16-4
CPA-20-5 1950 B-A1A 2000 only A-units built
CPA-24-5 1951-52 B-A1A 2400 only A-units built
H-15-44 1947-50 B-B 1500
H-16-44 1950-63 B-B 1600
H-16-66 1951-58 C-C 1600
H-24-66 1953-57 C-C 2400
GENERAL ELECTRIC DIESEL LOCOMOTIVES
Model Year Wheel Horse Notes
Built Arrangement Power
U28CG 1966 C-C 2800 Santa Fe
U30CG 1967 C-C 3000 Santa Fe
LIMA DIESEL LOCOMOTIVES
Model Year Wheel Horse Notes
Built Arrangement Power
LRS 1200 1950-51 B-B 1200
Diesel locomotives would often run in multiple. And many railroads with their E-units and F-units, assigned a single number to a set of locomotive units, semi permanently coupled together. And each unit would have a letter following the overall number. Usually with an "A" for the lead unit, a "B" for the following unit, and a "C" or a "D" for any following units. A locomotive set might have a leading A-unit and only B-units behind, to give a passenger train a sleek streamlined look. Or often a locomotive set would be bidirectional, with an A-unit at each end and the cab at each end of the set.But over the years, many railroads ceased to keep their locomotive sets together. Including railroads operating commuter trains in Chicago, which rarely had more than one locomotive. Some E-units might have been numbered with "A" or "B", but never actually operated coupled together for any significant amount of time, if at all. Computerization eventually led to railroads eliminating number schemes which used letters.
With the passenger locomotive roster pages at this section, usually the original numbers are used. Although for some railroads, a later numbering scheme is used if it simplifies how information is presented. Semi permanently coupled sets are presented as such. With the different letters running together for the locomotive number, and a sequence of A's and B's with the model designation reflecting the A-units and B-units.
Roster pages are complete for the E-units and other locomotives originally built specifically for passenger service. Also included are other known locomotives, equipped with steam generators for passenger service. Information is mostly complete for F-units. But information may be less accurate for road switchers (GP and RS type locomotives). With road switchers, with a locomotive order, not all locomotives in a consecutively numbered series were equipped for passenger service. Although every effort was made to verify accuracy and research where gaps existed. Many of those locomotives later had their steam generators removed and were reassigned to freight service.
Some locomotives were built using trade in components, often resulting in a horsepower reduced from the standard model at the time. Mostly E-units. Those locomotives have the model designation followed with the letter "M", for modified. For example, E8AM.