1. Home
  2.  ›
  3. Diesel Locomotives
  4.  ›
  5. Whitcomb Locomotive Works

Whitcomb Locomotive Company: Models, Photos, History

Last revised: August 26, 2024

By: Adam Burns

The Whitcomb Locomotive Works started out in the early 1890s, created by George D. Whitcomb under an entirely different name.

The company's claim to fame was first manufacturing mining equipment and then later small, gasoline-powered locomotives for the war effort.

It was here that Whitcomb earned its reputation for producing quality products, which attracted the attention of larger companies in the field.

It was eventually purchased by the Baldwin Locomotive Works at which point it began building the classic small diesel switchers most railfans now remember. 

Given their tiny stature most of its models were listed by their weight per ton although every model was given an array of numbers and letters.

Following Baldwin's closing in the early 1950s, Whitcomb disappeared as well despite the fact that its locomotives were always popular. Today, you can still find several examples of its models preserved around the country.

Gulf Oil Company 65-ton center-cab switcher #8, a product of the Whitcomb Locomotive Works. American-Rails.com collection.

History

The history of the Whitcomb Locomotive Works began as early as 1878 when George Whitcomb began building mechanized mining equipment in his own home workshop. In the late 19th century the only way for coal mines to move their product from the face to the entrance was via rail carts pulled by mules or small horses.

For years companies realized how inefficient this method was on many levels from keeping them fed to not overworking the animals. Mechanization was certainly the way to go although a practical, small mining locomotive had yet to be developed.

As a self-made inventor Whitcomb realized the market potential and began manufacturing a standard gasoline-engine model himself. The first was tested in a mine located in central Illinois and the locomotives became quite popular, so much so that he founded the George D. Whitcomb Company in 1892 and moved to an independent facility in Chicago.

Overview

Headquarters
Rochelle, Illinois
Gas/Diesel Locomotive Production
1906 - 1952
Lineage
1878 (George D. Whitcomb Company)
Early Production
Trollies and Battery Locomotives
Locomotive Types
Diesel-Hydraulic, Diesel-Mechanical, Gas-Mechanical
Mechanical Drive Locomotives
30 - 40 Tons
Electric Drive Locomotives
10 - 90 Tons
Use
Industrial and Common-Carrier
Total Locomotives Produced
5,000
Serial Number System

1 - 10,000s (Gas-Mechanical)

40,000s (Diesel-Mechanical)

50,000s (Gas-Electric)

60,000s (Diesel-Electric)

76,000s (Baldwin Serial System)

Successor
Baldwin Locomotive Works (1931)
Acquisitions
Milwaukee Locomotive Manufacturing Company (1932 - 1935)

The demand for these locomotives continued to grow, which forced Whitcomb in 1907 to move to a larger facility in Rochelle, Illinois, located to the west of Chicago.

It also began branching out and building small, diesel-electric units. A final move occurred in 1912 to an even larger plant, also in Rochelle, which would serve as the company's base of operations for the next 40 years. The World War I conflict proved to be another time of growth for Whitcomb.

While virtually all of its orders during this period came directly from the government it produced a reliable and rugged locomotive used for the trench railways of France. Like all of the company's products these trench engines were small, weighing between 6 to 9 tons and operating over a narrow-gauge network.

Santa Fe 44-ton switcher #451, a 1941 product of Whitcomb, is seen here in Colorado Springs, Colorado in 1953. This unit, built in January, 1941 was later sold to El Paso Iron & Metal in March, 1965. American-Rails.com collection.

Baldwin Locomotive Works

They proved to be invaluable to the war effort moving men and material and Whitcomb's achievements were recognized by the United States War Department, which presented the company with a "Certificate of Merit" award.

Major changes for the manufacturer occurred in 1929 when it was acquired by the Baldwin Locomotive Works, and two years later in 1931 was renamed as the Whitcomb Locomotive Works, a subsidiary of its parent.

The late 1920s also signaled a period in which Whitcomb was becoming more well known and popular in the industrial marketplace; its small models were perfect for such applications, shuffling a few cars through tight clearances and less than ideal track.

Under Baldwin the company hoped to diversify Whitcomb and market it to the broader railroad industry as well.

9187254162581598189689678.jpgRock Island 75DE12C #1015, a 75-ton switcher produced by Whitcomb as Canadian National #7819, is seen here at Morris, Illinois on January 28, 1967. Roger Puta photo.

Industrial Models

From at least the 1920s Whitcomb began to provide its design with a modeling system that was somewhat confusing. For instance, in the 1930s the company was manufacturing models like the 20-GM-3, 5-DM-13, and 20-GM-9 (sometimes also listed without dashes).

The designations behind these numbers were as follows; the first two digits referred to the weight, the second two letters listed the engine/drive combination (DM = Diesel Mechanical, DE = Diesel Electric, and GM = Gas Mechanical), and the last two for the design number (if a variant existed it was given subletting such as 25-DM-42A).

So, using the 5-DM-13 as an example the "5" regarded its weight as 5 tons, "DM" listed it as a Diesel Mechanical, and "13" meant it was the thirteenth in the series. Virtually all of the Whitcomb Locomotive Works locomotives built through the 1930s remained small, two-axle designs.

Amazingly, Baldwin essentially sold its subsidiary as its primary manufacturer of diesel locomotives through the late 1930s which caused it to lose significant market share.

By 1940 the builder was again renamed, this time as the Whitcomb Locomotive Company, after it was fully acquired by Baldwin. The decade also saw the builder releasing the largest and most power models it ever constructed such as the center cab 65-DE-14 (and "A" and "B" variants) around World War II.

Interestingly, Whitcomb remained a fairly popular builder of small diesel switchers through the late 1940s that led to further expansion of its Rochelle plant.

However, in 1948, its parent Baldwin came under the control of Westinghouse Electric Company and in 1951 it merged with the Lima-Hamilton Corporation to form Baldwin-Lima-Hamilton Corporation (BLH). 

Rock Island 75-tonner #1000, a Whitcomb model 75DE12C switcher, at Waterloo, Iowa, circa 1965. The Rock owned seventeen of these units, #1000-1016, originally built for Canadian National between 1948-1949 (#7803-7820). However, CN was not satisfied with the units and returned them to Whitcomb where they were subsequently acquired by the Rock in 1950. One other former CN unit was sold to the Washington & Old Dominion. American-Rails.com collection.

Final Years

Under Westinghouse control Baldwin's purchase of Lima-Hamilton was to diversify its interests outside of the locomotive market (LH was well known for its heavy machinery business).

Interestingly, Westinghouse control came just as Baldwin management was more focused and interested in strongly competing against Alco and EMD in the diesel-electric market. However, this was not to be as Westinghouse did not share a similar philosophy. Whitcomb would eventually meet the fate of its parent.

In February, 1952 its Rochelle plant was closed and merged with Baldwin's facility in Eddystone, Pennsylvania. Its final locomotive was built in late March of 1956 with more than 5,000 constructed following roughly 64 years of manufacturing. 

Today, several of its small switchers remain in use on tourist railroads and at museums around the country thanks to their low restoration and operating costs.

Sources

  • Hayden, Bob. Diesel Locomotives: Cyclopedia, Volume 2 (Model Railroader). Milwaukee: Kalmbach Publishing Company, 1980.
  • Pinkepank, Jerry A. Diesel Spotter's Guide.  Milwaukee: Kalmbach Publishing Company, 1967.
  • Reed, Jay.  Critters, Dinkys & Centercabs.  Whittier: Rio Hondo, 2000.

Recent Articles

  1. EMD "SD35" Locomotives: Data Sheet, Specs, Roster

    Nov 06, 26 10:35 PM

    720774650013819109490158.jpg
    EMD SD35, 2,500 horsepower, 16-cylinder 567D3A, built June 1964 through January 1966. 360 locomotives. Specifications and the production roster by owner, serial, and order.

    Read More

  2. EMD "SDP35" Locomotives: Data Sheet, Specs, Roster

    Nov 06, 26 10:32 PM

    sal-sdp35-1115.jpg
    EMD SDP35, the steam-generator SD35. 35 locomotives, July 1964 through September 1965. Seaboard Air Line 1100-1119, Atlantic Coast Line 550, Louisville and Nashville 1700-1703, Union Pacific 1400-1409…

    Read More

  3. RJ Corman Will Be Replaced on Part of the Luzerne Lines

    Nov 06, 26 01:34 PM

    rn-tunkhannock-dk.jpg
    A November 6, 2026 notice says Wilkes-Barre Terminal Railway would acquire about 59.65 miles in Luzerne County and replace R.J. Corman as operator on part of the line. The earliest date is November 22…

    Read More

  4. NS Names a Student Hub at the University of Georgia

    Nov 06, 26 12:03 PM

    ns-3631-wc.jpg
    Norfolk Southern said a 100,000 dollar gift named a student-organization hub in Driftmier Engineering Center. The University of Georgia marked the naming on October 26. The space is for 23 clubs.

    Read More

  5. Union Pacific Filed Its Vena Recording Certification

    Nov 06, 26 11:56 AM

    up-9523-np.jpg
    Union Pacific filed a November 5, 2026 verified statement that the confidential label is off the March 17 Vena recording and that parties of record received a copy at 3:30 p.m. Eastern.

    Read More

  6. OmniTRAX Adds Tenants at Its Blue Island Hub

    Nov 06, 26 10:26 AM

    omnitrax-blueisland.jpg
    OmniTRAX has signed new construction-company leases at its 90-acre Blue Island, Illinois, hub and is planning a second phase.

    Read More

  7. Veterans and Active-Duty Members Exceed 16 Percent of Norfolk Southern

    Nov 06, 26 10:14 AM

    ns-9232-dk.jpg
    Norfolk Southern said on November 5, 2026, that more than 3,000 veterans and active-duty service members are more than 16 percent of its workforce. This year grants are $100,000 and $50,000.

    Read More

  8. BNSF: Merger Would Put Half of U.S. Rail Shipments Under One Railroad

    Nov 06, 26 10:00 AM

    bnsf-crawford-2009.jpg
    BNSF chief marketing officer Tom G. Williams told customers on November 3, 2026, that a Union Pacific-Norfolk Southern merger would put about half of U.S. rail shipments under one railroad. Nothing is…

    Read More

  9. Amtrak Opens a Winter Fare Sale

    Nov 06, 26 09:28 AM

    amtrk-pennsylvanian-2021.jpg
    Amtrak opened a Winter Wanderlust sale on November 5, 2026. Book by November 12 for travel from December 1, 2026, through March 14, 2027. Blackout dates apply. Coach and Acela Business only.

    Read More

  10. CN and CPKC Report October Grain Records

    Nov 06, 26 08:50 AM

    cpkc-9375-pimage.png
    CPKC reported October 2026 grain records in Canada and the United States. CN reported 3.54 million metric tonnes across Canada. The releases do not print a combined total.

    Read More

  11. New Brunswick Transload Gets CN Rail Service

    Nov 06, 26 08:49 AM

    cn-newbrunswick-transload.png
    CN said on November 4, 2026, that it has started serving AD Gagnon Transload Services near Grand Falls, New Brunswick. The site is three kilometres from the Trans-Canada Highway and lists room for 106…

    Read More

  12. Together, Freight and Passenger Rail Can Grow, Union Pacific Says

    Nov 06, 26 08:47 AM

    up-joyce-1996.jpg
    Union Pacific said on November 5, 2026, that passenger obligations would remain if it combines with Norfolk Southern. The capacity claim is a Union Pacific analysis, not a Surface Transportation Board…

    Read More

  13. FM "C-Liner" Locomotives: Specs, Roster, Photos

    Nov 05, 26 11:19 PM

    milw-28c-cfa164-rb.jpg
    Fairbanks-Morse Consolidation Line cab units, the C-Liners. 165 locomotives, Beloit and Kingston, March 1950 through February 1955. Models, specs, and production rosters.

    Read More

  14. Atlanta, Birmingham & Coast Railroad: Map, History, Roster

    Nov 05, 26 12:03 PM

    abc-282-213.jpg
    Atlanta, Birmingham & Coast, from Brunswick and Waycross to Atlanta and Birmingham. Atlantic Coast Line control at the close of 1926. Merged in January 1946 as the Western Division. Steam roster of th…

    Read More

  15. El Paso & Southwestern Railroad: Map, History, Logo

    Nov 05, 26 12:00 PM

    2777916859030886.jpg
    The El Paso & Southwestern, the Phelps Dodge copper railroad from Tucson to the Rock Island at Tucumcari. Southern Pacific control on October 31, 1924.

    Read More

  16. Brightline Says Orlando Service Has Resumed

    Nov 05, 26 11:55 AM

    brightline-wpb-publicity.jpg
    Brightline said on November 5, 2026, that trains to and from Orlando have resumed after weather suspensions in Brevard County. Later that morning the departures page still showed the Orlando segment s…

    Read More

  17. Metra Customers Must Sign Up Again

    Nov 05, 26 11:43 AM

    metra-406-dk.jpg
    Metra says customers who want service alerts must sign up again at metratracker.com. The November 2 story says the new system has launched and the old email list is shut down. A notice on the same pag…

    Read More

  18. Norfolk Southern Packs Six Projects Into One Window

    Nov 05, 26 11:38 AM

    english-tunnel-ns-project.jpg
    Norfolk Southern used one 26-hour window on the W Line for six projects in Indiana and Kentucky, including three bridge replacements. The October 27 account does not give the calendar day of the work.

    Read More

  19. CSX: More Time to Comment on an Inspection Waiver

    Nov 05, 26 11:29 AM

    csx-alvada-2012.jpg
    The Federal Railroad Administration extended comments on a CSX petition for relief from some qualified mechanical inspector rules until December 2, 2026. The November 2 notice does not grant the waive…

    Read More

  20. Brightline Expects Orlando Service on Thursday

    Nov 05, 26 09:21 AM

    bright-deerf-dk.jpg
    Brightline said on November 4, 2026, that it expects trains to and from Orlando to resume on Thursday, November 5. South Florida stations kept running. The departures page still showed the Orlando seg…

    Read More

  21. Union Pacific: More Time to Comment on an Inspection Waiver

    Nov 05, 26 09:15 AM

    up-5295-gila-dk.jpg
    The Federal Railroad Administration extended comments on a Union Pacific petition for relief from some qualified mechanical inspector rules until December 2, 2026. The November 2 notice does not grant…

    Read More

  22. Wisconsin Opens Comments on the 2027 Freight Plan

    Nov 05, 26 09:03 AM

    wisc-lima-2010.jpg
    WisDOT opened the draft 2027 State Freight Plan for comment through December 1, 2026. The plan covers freight rail with highways, harbors, aviation, and intermodal links. Completion is expected in sum…

    Read More

  23. U.S. Rail Traffic Rose 3.5 Percent in the Week Ending October 31

    Nov 05, 26 08:52 AM

    housatonic-155-2026-dk.jpg
    U.S. railroads moved 514,080 carloads and intermodal units in the week ending October 31, 2026, up 3.5 percent from a year earlier, the Association of American Railroads said on November 4.

    Read More

  24. Muni and Bay Area Transit Measures Pass

    Nov 05, 26 08:49 AM

    muni-1006-dj.jpg
    San Francisco Municipal Transportation Agency said on November 4, 2026 that Proposition H and a regional transit measure passed. Proposition H is about 160 million dollars a year for Muni. The regiona…

    Read More

  25. Ground Rules Set for Responsive Applications

    Nov 05, 26 08:47 AM

    ns-8383-altoona-04.jpg
    Decision No. 46, served November 4, 2026, denies a request to add Walsenburg to the Union Pacific interchange list and sets what CPKC and CN must include in responsive applications. Four CPKC proposal…

    Read More

  26. Video of the Vena Address Must Be Released

    Nov 05, 26 08:42 AM

    up-5316.jpg
    The Surface Transportation Board on November 4, 2026 denied the Union Pacific appeal and ordered the March 17 shipper-conference recording released to the parties by 5:00 p.m. Eastern on November 5. C…

    Read More

  27. Chicago & North Western Iron Ore C628s

    Nov 04, 26 11:47 PM

    cnw-c628-gooselake-charliehill.jpg
    Chicago and North Western C628s 6701-6730, the ex-Norfolk and Western high-hoods, in Upper Peninsula iron-ore service from the mid-1970s until December 21, 1986, and what happened to each unit.

    Read More

  28. Warrenton Railroad: Serving Warrenton, NC (1884-1985)

    Nov 04, 26 10:33 PM

    warrenton-nc-1985.jpg
    The three-mile Warrenton Railroad, from Warren Plains to the North Carolina county seat. Chartered January 28, 1871. First train November 8, 1884. Closed in 1985.

    Read More

  29. Rio Grande Steam Locomotives (Since 1900)

    Nov 04, 26 11:40 AM

    2692039486562561732j2h07978.jpg
    Denver & Rio Grande Western steam locomotives built since 1900. Standard gauge quantity 435 and narrow gauge 48. Challengers, 2-8-8-2s, Mountains, Northerns, and the K-27, K-28, K-36, and K-37.

    Read More

  30. Rio Grande Diesel Locomotives (All-Time)

    Nov 04, 26 11:39 AM

    590019237125351261y6179286007.jpg
    Denver & Rio Grande Western diesel locomotives, each frame once. 554 units, from the 1941 NW2 through the 1990 GP60s. FT, F3, F7, and F9 sets are not counted again under their 1950 numbers.

    Read More

  31. Rio Grande Railroad: Map, Logo, History, Rosters

    Nov 04, 26 11:34 AM

    drgw-f3s-soldiersummit.jpg
    Denver & Rio Grande Western history, from William Jackson Palmer and the October 27, 1870 charter through the Royal Gorge, the Moffat route, the California Zephyr, and Union Pacific common control…

    Read More

  32. Lindblom Gift Expands the Fort Wayne Restoration Shop

    Nov 04, 26 11:14 AM

    nkp-765-fort-wayne-shops.jpg
    Art Lindblom gave the Fort Wayne Railroad Historical Society more than $1.4 million, its largest single gift, to expand the New Haven shop. The addition is planned for late 2026 and early 2027. A sepa…

    Read More

  33. Design Contract Awarded for the Forest Park Branch

    Nov 04, 26 11:09 AM

    forest-park-rebuild.jpg
    The Chicago Transit Board approved a design contract for about 13 miles of Blue Line track from the Illinois Medical District to the I-290 Bridge. The release summary calls it a $17 million contract…

    Read More

  34. Kanawha River Railroad: The Norfolk Southern Lease Is Renewed

    Nov 04, 26 10:51 AM

    knwa-4213.jpg
    Kanawha River Railroad filed to keep leasing 309.45 miles from Norfolk Southern in West Virginia and Ohio. The second amendment is dated August 17, 2026. The Board has not set the date the exemption t…

    Read More

  35. Short Line Center Awarded a $5.625 Million Grant

    Nov 04, 26 10:35 AM

    everett-1712-dk.jpg
    The American Short Line and Regional Railroad Association received a $5.625 million CRISI grant on October 20, 2026, for the Short Line Training Center. A 25 percent match brings the project to $7.5 m…

    Read More

  36. Palestine and Rusk Track Rebuild Finishes Its First Phase

    Nov 04, 26 09:13 AM

    terr_ribbon_cutting.jpg
    The Texas & Eastern Railroad has finished the first phase of a roughly $30 million track project between Palestine and Rusk. Phase I used a $13.4 million CRISI grant. Phase II, at $8.54 million, adds…

    Read More

  37. Manhattan, Brooklyn, Queens, and the Bronx Get Subway Power Design

    Nov 04, 26 09:12 AM

    STV said on November 2, 2026, that MTA Construction and Development selected the firm to manage design of 10 subway substations and 12 circuit breaker houses in four New York boroughs. No contract pri…

    Read More

  38. Chicago's Regional Transit Budget Goes Out for Comment

    Nov 04, 26 09:07 AM

    metra-blueislandil-184.jpg
    The Northern Illinois Transit Authority opened its first regional budget for comment through December 4, 2026. The proposal is $5.04 billion for 2027 operations and $9.73 billion in capital work throu…

    Read More

  39. VIA Rail Finishes the Toronto Maintenance Centre

    Nov 04, 26 09:05 AM

    via-rail--maintenance-center.jpg
    VIA Rail completed a four-year modernization of its Toronto Maintenance Centre on November 2, 2026. The Government of Canada invested $310 million. The shop supports 32 Corridor trainsets and will sus…

    Read More

  40. Brightline Suspends Orlando Service for High Water

    Nov 04, 26 09:02 AM

    brightline-dixie-2026-dk.jpg
    Brightline suspended trains between Orlando and West Palm Beach on November 2, 2026, because of high water in Brevard County. A later post the same day kept the suspension until 2:00 p.m. on November…

    Read More

  41. Hiawatha West Draws Federal Funding Toward Madison

    Nov 04, 26 08:58 AM

    hiawathawest-madison.jpg
    Amtrak welcomed a CRISI selection for Hiawatha West, extending Chicago-Milwaukee service toward Madison, Watertown, and Pewaukee. Wisconsin said on October 16 that the award is over $218 million.

    Read More

  42. Seattle's Train Maintenance Facility Opens for Airo Trains

    Nov 04, 26 08:56 AM

    seattleshop-ribbon.png
    Amtrak cut the ribbon October 23, 2026, on a $250 million Seattle shop for Airo trains on the Cascades route. The building came in on time and $50 million under budget and opens in phases through the…

    Read More

  43. Aberdeen Carolina and Western Wins a $19.9 Million Grant

    Nov 04, 26 08:46 AM

    weldedrail-acwr.jpg
    The Aberdeen Carolina and Western Railway won a $19.9 million CRISI grant for about 30 miles of welded rail in Montgomery and Stanly counties. The railroad and NCDOT are putting up a 52 percent match…

    Read More

  44. Alco "C628" Locomotives: Roster, Data Sheet, Specs

    Nov 03, 26 07:57 PM

    i34892385273572389238969836899073.jpg
    Alco Century C628: 2,750 hp C-C road switcher, 186 built from December 1963 to December 1968. Production roster, specs, and where the high-hood Norfolk and Western units went.

    Read More

  45. Santa Fe Railroad (AT&SF): Diesel Roster (All-Time)

    Nov 03, 26 12:54 PM

    atsf_diesel_hero.jpg
    Santa Fe diesel locomotives, each new frame once, with construction numbers and order numbers. The counted total is 3,964, from the 1935 boxcabs through the SD75Ms.

    Read More

  46. Metra Holiday Trains Return on Six Lines

    Nov 03, 26 11:40 AM

    metra-blue-island-2014.jpg
    Metra holiday trains will run on six lines in December, with tickets on sale at noon November 16 for $10. The Chicago Transit Authority and Pace are fielding holiday buses in the same regional announc…

    Read More

  47. Amtrak Encourages Early Booking for Thanksgiving

    Nov 03, 26 11:39 AM

    amtk-822-harpersferry.jpg
    Amtrak is asking travelers to book Thanksgiving trips early. The railroad carried more than 1.2 million customer trips over the 2025 holiday and expects another record, with extra Northeast Regional s…

    Read More

  48. Channel Pacific Keeps Its West Sacramento Exemption

    Nov 03, 26 11:26 AM

    The Surface Transportation Board denied a West Sacramento challenge to Channel Pacific Railroad’s exemption to operate about 2,132 feet of terminal track. The exemption took effect in June 2026.

    Read More

  49. DART Marks One Year of the Silver Line

    Nov 03, 26 11:22 AM

    dart-silver-one-year.jpg
    DART marked one year of Silver Line service linking seven North Texas cities and DFW Airport. The 26-mile regional rail line opened October 25, 2025, as the agency’s first rail expansion in a decade.

    Read More

  50. Massachusetts Breaks Ground for the Berkshire Flyer

    Nov 03, 26 10:07 AM

    Massachusetts broke ground October 29 in Pittsfield on track work meant to support permanent seasonal Berkshire Flyer service. MassDOT has $31 million for the project in its 2027-2031 capital plan.

    Read More