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Update December 27, 2012
UCA Containers A. G. - UCAU - See - R-Marks
UELX - Ohio
Uintah Railroad - See - Railway List
Uintah Railway Company - 1989 - Colorado - See - Railway List & Report - Fallen Flags
Uiterwyk Corporation - UUUZ - See - R-Marks
Ulster & Delaware Railroad Company - 1899 - Delaware - See - Railway List & Report &
Ulster & Delaware Railroad Historical Society & Fallen Flags
Ulster & Delaware Railroad Historical Society - Delaware-New York
Ultima, Thule, Arkadelphia & Mississippi Railroad - See - Railway List
Ulvalde & Northern Railway - 1914/1921-1941 - Texas - See - Railway List
Unadilla Valley Railway Company - 1960 - New York - See - Railway List & Report & Fallen Flags
Unadilla Valley Railway Society & Museum - New York
Uncanoonuc Incline Railway - See - Railway List
Underwood Veneer Company - 1914-1925/1925-1933 - Wisconsin
Unichema Chemicals Incorporated - UCIX - See - R-Marks
Unicorn Lines Limited (Pty) - UCLA - See - R-Marks
Unidos de Yucatan - See - Railway List
Unidos del Sureste - See - Railway List
Unimin Corporation - WWUX - See - R-Marks
Union & Glenn Springs Railroad - See - Report
Union & Titusville Railroad Company (Union & Titusville Rail Road Company (The))
(Oil Creek & Allegheny River Railway Company (The)) (Pittsburgh, Titusville & Buffalo Railway Company (The))
(Buffalo, Pittsburgh & Western Railroad Company (The)) (Buffalo, New York & Philadelphia Railroad Company (The))
(Western New York & Pennsylvania Railway Company of New York)
(Western New York & Pennsylvania Railway Company of Pennsylvania)
(Western New York & Pennsylvania Railway Company of New York) (Western New York & Pennsylvania Railroad Company)
(Western New York Railway Company) (Northwestern Pennsylvania Railway Company)
(Pennsylvania Railroad Company (The) (Consolidated Rail Corporation) -1866-1870 - Pennsylvania
Union & Titusville Rail Road Company (The) (Oil Creek & Allegheny River Railway Company (The))
(Pittsburgh, Titusville & Buffalo Railway Company (The)) (Buffalo, Pittsburgh & Western Railroad Company (The))
(Western New York & Pennsylvania Railway Company of New York) (Buffalo, New York & Philadelphia Railroad Company (The))
(Western New York & Pennsylvania Railway Company of Pennsylvania)
(Western New York & Pennsylvania Railway Company of New York) (Western New York & Pennsylvania Railroad Company)
(Western New York Railway Company) (Northwestern Pennsylvania Railway Company)
(Pennsylvania Railroad Company (The) (Consolidated Rail Corporation) - 1870-1871 - Pennsylvania
Union Bay & Nonesuch Railroad - Michigan - (Private Ore Road; Headquarters in Ontonagon County)
Union Belt of Detroit - 1992-1992
Union Belt Railroad - UB - Michigan
Union Camp Corporation - UBTX-UCSX - New Jersey - See - R-Marks
Union Canal - See - Railway List
Union Carbide Corporation - CCBX-HYDX-LTCX-RAIX-UCCX-UCFX-UCOX-UCPX - West Virginia - See - R-Marks & Railway List
Union Carbide Ethylene Oxide/Glycol Company (Union Carbide Corporation) - EOGX - West Virginia - See - R-Marks
Union County Industrial Railroad Company - 1994 - UCIR - Pennsylvania - See - R-Marks & North Shore Railroads & Railway List
Union Depot & Railroad Company of Denver - See - Railway List
Union Depot & Ttansfer Company of Stillwater (Northern Pacific Railway Company) (Burlington Northern Railroad)
(Burlington Northern & Santa Fe Railroad) - 1896-1902 - Minnesota
Union Depot Company (Columbus, Ohio) - See - Report
Union Depot Company (Kansas city, Missouri) - See - Railway List
Union Depot Railroad Company - 1890's-1920's - Missouri - See - History of St. Louis Neighborhoods
Union Depot Railroad Museum - Illinois
Union Electric Company - UCEX - Missouri - See - R-Marks & Merger & Fallen Flags
Union Electric Railway - 1946-1948 - Kansas - See - Railway List
Union Elevated Railroad (Chicago Rapid Transit Company) - 1894-1924 - Illinois - See -
Chicago Rapid Transit Consolidation & Chicago "L"
Union Equity Grain Corporation - Texas - See - Don's Rail Photo
Union Freight Railroad Company - 1800s - Massachusetts - See - Railway List & Report & Fallen Flags
Union Iron Works - See - Railway List
Union Oil Company of California (Unocal Corporation) - UOCX-UOEX - California - See - R-Marks
Union Pacific Coal Company - See - Railway List
Union Pacific Corporation - 1980s - Utah
Union Pacific, Customized Transportation, Incorporated (CSX Corporation) - (CTI) - 1998
Union Pacific, Denver & Gulf Railroad - See - Family Tree & Historical
Union Pacific, Denver & Gulf Railway Company (The) (Colorado & Southern Railway Company (The))
(Chicago, Burlington & Quincy Railroad Company) (Burlington Northern Railroad)
(Union Pacific Railroad Company) - 1890-1898 - Colorado - See - Railway List
Union Pacific Distribution Services (Union Pacific Railroad Company) - (UPDS) - 1995 - Nebraska
Union Pacific Eastern Division (Kansas Pacific Railroad) - 1863-1868 - Kansas
Union Pacific Historical Society - 1984 - California
Union Pacific, Lincoln & Colorado Railway - See - Railway List
Union Pacific Railroad Company (Formerly (Southern Pacific Transportation Company))
(Missouri Pacific Railroad) (Southern Pacific Transportation Company) (Union Pacific Railroad Company)
(Union Pacific Corporation) - 1848-1995/1995 - ACWZ-CGW-CMO-CNW-CNWZ-FDDM-LM-MSTL-RCWC-SI-TIRZ-
TNM-UP-UPBZ-UPFE-UPFU-UPNZ-UPP-UPR-UPRQ-UPRR-UPRU-UPTU-UPUU-UPZ-WP-WPMU-WPMW-WPTZ-
WPXZ-WPZ-XCWZ - Arkansas-California-Colorado-Idaho-Illllllinois-Iowa-Kansas-Louisiana-Michigan-Minnesota-
Missouri-Montana-Nebraska-Nevada-Oklahoma-Oregon-South Dakota-Tennessee-Texas-Utah-Washington-Wisconsin-
Wyoming - See -Union Pacific Railroad Museum & R-Marks & Burlington Route Historical Society &
Railway List & Chicago Great Western Railway & Library of Congress Maps & Don's Rail Photos & Historical-1894-1911 &
Burlington Northern Railroad Company Incorporated & Chronology of the Colorado & Southern & Report
(There are 1,950,000 more sites listed on search engines)
Union Pacific Railway Company - 1888 - California to Illinois - See - Railway List
Union Pacific Technologies (Union Pacific Technologies Transportation Systems, Incorporated) (Union Pacific Corporation) - 1987-1991
Union Pacific Technologies Transportation Systems, Incorporated (Union Pacific Corporation) - (UPTTS) - 1991
Union Passenger Depot Company of Galveston - See - Report
Union Passenger Railroad Company of Philadelphia (The) - 1871 - Pennsylvania
Union Passenger Railway Company (Continental Passenger Railway Company) (Philadelphia Rapid Transit Company) -
1879-1884 / 1898 - Pennsylvania - See - Stocks & Historical & Railway List & Early Railroad Transportation
Union Passenger Railway Company of Philadelphia - 1881 - Pennsylvania
Union Point & White Plains Railroad Company - 1889-1927 - Georgia - See - Railway List & Report
Union Power Association - UPAX
Union Rail Enterprises, Incorporated - 1987-1993
Union Railroad Company (Transtar Incorporated) - 1896-1988 / 1988 - URR - Pennsylvania - See - R-Marks &
Don's Rail Photos & Railway List
Union Railroad Company (of Baltimore)
Union Railroad Company (New York) - See - Railway List & Report
Union Railroad Company (Pennsylvania) - See - Report
Union Railroad Company of Baltimore
Union Railroad Elevator & Transportation Company
Union Railroad of Oregon - 1927-1989 - UO - Oregon - See - Onward's Roster & Railway List & Fallen Flags
Union Railroad Transfer & Stock Yard Company - 18707-1879 - Indiana?
Union Railway - 1866-1899 - Missouri - See - Railway List & History of St. Louis Neighborhoods
Union Railway Company (Memphis, Tennessee) - 1895 - Tennessee - See - Historical-1922 & Report
Union Railway of Memphis (Texas, Mississippi River & Northwestern Railroad Company)
(St. Louis, Iron Mountain & Southern Railway) (Missouri Pacific Railroad) - 1996-1917 - URY - Tennessee - See - R-Marks
Union Refrigerated Transit - 1929 - See - Railway List
Union Refrigerator Transit Company
Union River Logging Railroad - See - Railway List
Union Steam Ship Company of New Zealand Limited - USCU - See - R-Marks
Union Stock Yard & Transit Company - 1865 - Illinois - See - Railway List
Union Stock Yards & Transit Railroad - (Short Line) - Illinois - See - Shortlines of the Chicago Historical Society
Union Stock Yards Company of Omaha (Limited) - See - Report
Union Stockyards - Minnesota Transfer (Minnesota Transfer Railway Company)
(Minnesota Northern Railroad) - 1883-1884 - Minnesota
Union Street Railway - Massachusetts - See - Railway List
Union Sugar Division, Holly Sugar Corporation - USGX - Wyoming - See - R-Marks
Union Tank Car Company - 1992 - BAYX-BCWX-RTCX-TCDX-UTBX-UTCX-UTLX - Delaware-Illiois-Wyoming - See -
R-Marks & Railway List & Don's Rail Photos & Fallen Flags
Union Tank Line - See - Railway List
Union Terminal Company (Dallas, Texas) - 1916 - Texas - See - Railway List & Report
Union Terminal Railroad Company of the City of Buffalo (The) (Western New York & Pennsylvania Railway Company)
(Pennsylvania Railroad Company (The) (Consolidated Rail Corporation) - 1884-1917 - New York - See - Archives & Railway List
Union Terminal Railway Company (of St. Joseph, Missouri) - Missouri - See - Burlington Route Historical Society & Report
Uniontown & West Virginia Railroad Company (Uniontown & West Virginia Railroad Company (The))
(South-West Pennsylvania Railway Company) (Pennsylvania Railroad Company (The))
(Consolidated Rail Corporation) -1868-1874 - Pennsylvania
Uniontown & West Virginia Railroad Company (The) (South-West Pennsylvania Railway Company)
(Pennsylvania Railroad Company (The)) (Consolidated Rail Corporation) -1874-1877 - Pennsylvania
Uniontown Railway Company (Brownsville Railway Company (The)) (Pittsburgh, Virginia & Charleston Railway Company)
(Pittsburgh, Virginia & Charleston Railway Company (The)) (Pittsburgh, Virginia & Charleston Railway Company)
(Pennsylvania Railroad Company (The)) (Consolidated Rail Corporation) - 1879-1879 - Pennsylvania
Union Traction Company of Indiana (Indiana Railroad) (Marion Railways) - 1899-1930 - UTC - Indiana -
(1947 Streetcars Discontinued in Marion) (1931 Streetcars Discontinued in Muncie) - See - Railway List
Union Traction Railroad
Union Transportation Company - 1905-1907 - Tennessee - See - Railway List & Report
Union Wharf & Plank Walk Company - 1854 - See - Railway List
United Arab Shippers - UACU - See - R-Marks
United Arab Shipping Company (S. A. G.) - UAEU-UASU-UASZ - See - R-Marks
United Asphalts Incorporated - UAIX - Colorado - See - R-Marks
United Baltic Corporation Limited - UBMU - See - R-Marks
United Clays Incorporated (Watts Blake Bearne & Co PLC) - UCMX - Tennessee - See - R-Marks
United Commercial Company, Incorporated
United Electric Coal Company - 1960 - Illinois - See - Railway List
United Electric Railway Company - Rhode Island - See - Railway List
United Electric Railways - 1914-1966 - Rhode Island - See - Railway List
United Equipment Leasing Associates - UELX
United Fruit Company - UBCU - See - R-Marks & Stock & Railway List & Fallen Flags
United Grain Corporation - WCRX - Oregon
United New Jersey Railroad and Canal Company (The) (Pennsylvania Railroad)
(Camden & Amboy Rail Road & Transportation Company (The)) (Delaware & Raritan Canal Company (The))
(New Jersey Rail Road and Transportation Company (The)) - 1867 - New Jersey - See - Railway List & Report
United Parcel Service - UPOC-UPSZ-UPWZ - Georgia - See - R-Marks & Fallen Flags
United Power Association - UPAX - Minnesota
United Rail Passenger Alliance - Florida
United Railroad Historical Society of New Jersey - New Jersey
United Railroads of San Francisco - See - Railway List
United Railroads of Washington - 1891 - Washington - See - Railway List
United Railway of St. Louis - See - Railway List
United Railways (Spokane Portland & Seattle Railway Company) (Burlington Northern Division) - UR - Oregon
United Railways - 1907-1950's - Missouri - See - History of St. Louis Neighborhoods
United Railways & Electric Company - 1928-1947 - Maryland - See - Streetcars & Railway List
United Railways and Electric Company of Baltimore - 1899 - Maryland
United Railways Company (Oregon) - See - Report
United Railways of Oregon - See - Railway List
United Railways of Yucatan - See - Railway List
United Smelters, Railway and Copper Company - 1902 - Ohio-Wyoming
United South Eastern Railways Company (Ferrocarriles Unidos Del Sureste S.A. de C.V.) - SE - Mexico
United States Air Force - See - Railway List &
United States & Canada Express Company
United States and Canada Railroad Company - See - Railway List
United States Army - See - Railway List & Fallen Flags
United States Atomic Energy Commission (DOD) - See - Railway List & Fallen Flags
United States Railway Administration
U. S. Borax Incorporated - BORX - See - R-Marks & Railway List
United States Department of the Interior
United States Department of Transportation - See - Railway List & Fallen Flags
United States Enrichment Corporation - ENRX - Maryland - See - R-Marks
United States Isthamain Canal Commission - See - Railway List
United States Lines Incorporated - USLU & USLZ - See - R-Marks
United States Military Railroad - See - Railway List
United States Naval Ammunition Depot - See - Railway List
United States Navy - See - Railway List & Fallen Flags
United States Pipe & Foundry Company - 1954 - Alabama - See - Railway List
United States Railroad Administration - See - Railway List
United States Railway Equipment Manufacturing - See - Railway List
United States Steel Corporation - See - Railway List
United States Sugar - See - Railway List
United States Systems - SYSX - See - R-Marks
United States War Department - See - Railway List
United Steel & Strip Corporation - USSU - See - R-Marks
United Technologies Chemical Systems Division - SRMX - See - R-Marks
United Technologies - 1967 - See - Fallen Flags
United Traction Company (Delaware & Hudson Railway Company) (Norfolk & Western Railway Company)
(Guilford Transportation Industries) (Canadian Pacific Railway) - 1899-1905 - New York - See - Don's Rail Photos
Railway List & Troy & New England Railway & United Traction Company-2 & Lineage
United Traction Company of Pittsburgh - 1890s - Pennsylvania
United Traction Street Railway
United Trailer Leasing Company - UTLZ
United Verde & Pacific Railway Company - See - Railway List
United Yugoslav Lines - UYLU & UYLZ - See - R-Marks
Unitrain Incorporated - MIDX & UNTX - See - R-Marks
Unitrain Services (Agent for Iowa Power & Light) - UNSX - See - R-Marks
Unity & Northwestern Railroad - 1892-1897 - Wisconsin
Unity Railways Company - 1953 - UNI - Pennsylvania - See - R-Marks & Railway List & Report
Universal Bulk Handling Limited - BIDU - See - R-Marks
Universal Exploration Company - See - Railway List
Universal Portland Cement Company - 1930 - Indiana
University City Historical Society
University of Illinois - See - Railway List
University of Michigan - 1915-1949 - Michigan
University of Minnesota - See - Railway List
Unknown Railroad - See - Railway List
Unocal Chemicals Division, Union Oil Company of California - CLCX - West Virginia - See - R-Marks
UNO-VEN - UOEX - Illinois - See - R-Marks
Unuk River Mining & Smelting Company - 1905 - British ColumbiaUpjohn Company - See - Railway List
Upper Canada Railway Society - Ontario - See - Canadian Railroad Historical Association Toronto & York Division
Upper Columbia Navigation & Tramway Company - See - Railway List
Upper Columbia Railway Company - 1887 - See - Railway List
Upper Coos & Hereford Railroad - See - Railway List
Upper Coos Railroad (New Hampshire) - 1883 - See - Report
Upper Coos Railroad (Vermont) - 1883 - See - Report
Upper Coos Railroad Company - 1890s - New Hampshire - See - Railway List
Upper Hudson River Railroad - 1999 - New York
Upper Merion and Plymouth Railroad Company (Formerly (L I Acquisition Corporation d/b/a Upper Marion & Plymouth))
(Bethlehem Steel Corporation) - UMP - Pennsylvania - See - R-Marks & Railway List & Report &
Upper Marion & Plymouth Leasing Company - TGRX-UMPX-WSOX
Upper Peninsula & Green Bay Railroad - 1879 - Michigan - (208 Miles; Green Bay to Champion and Ontonagon; Charter Lapsed)
Upper Saint Lawrence Street Railway Company (Montreal City Passenger Railway Company) - 1864-1871 - Quebec
Upham Manufacturing Company -1889-1906 - Wisconsin - See - Upham Manufacturing Company-2 & Upham Manufacturing Company-3
Upson County Railroad Company - 1860-1883 - Georgia - See - Railway List
UP UP & Away Incorporated - UUAX
Urbana & Champaign Street Railroad Company - 1894 - Illinois - (1936-Streetcars Discontinued)
Urbana & Champaign Railway Gas & Electric Company - 1894-1897 - Illinois - (1936-Streetcars Discontinued) - See - Transit Systems
Urban Transportation Development Corporation - See - Railway List
URGX - Georgia
Ursina & North Fork Railway Company - See - Railway List & Report
U. S. Army Transportation Museum - Virginia - See - United States Army
USA Waste Services Incorporated - USWX - Texas - See - R-Marks
U. S. Department of Defense (Military Sealift Command) - MHQUMHQZ-MSQU - See - R-Marks & Railfan
U. S. Department of Defense (Military Traffic Management Command) - DODU-DODX-DODZ-USNX-USMU-USNU-USNX -
See - R-Marks & Railfan & Railway List
U. S. Department of Defense (Passenger Cars) - DAFX - See - R-Marks & Railfan
U. S. Department of Defense (Troop Support & Aviation Material Readiness Command) - USAX-USFU - See - R-Marks & Railfan
U. S. Department of Energy (Albuquerque Operations) - ATMX-TSSX - See - R-Marks & Railway List
U. S. Department of Energy (Bonneville Power Administration) - BPAX - See - R-Marks
U. S. Department of Energy (Oak Ridge Operations) - OROX - See - Operations & R-Marks
U. S. Department of Energy (Savannah River Operations) - SROX-WHCU - See - R-Marks
U. S. Department of the Interior (Bureau of Mines, Helium Field Operations) - MHAX - See - R-Marks
U. S. Department of Transport (Federal Railroad Administration) - DOTX - See - R-Marks
USI Chemicals Company Incorporated - CHEX & NPCX - See - R-Marks
U. S. Industrial Chemicals Company - USIX - Texas
USPCI Incorporated - MSUU & UPCU - See - R-Marks
U. S. Plastics Corporation - USPX - See - R-Marks
U. S. Postal Service - USPZ - See - R-Marks
U. S. Railcar Incorporated - USRX - See - R-Marks
U. S. Rail Services Incorporated - RUSX & TGOX
USS-Posco Industries - CWSX - California
U. S. Steel Corporation - USMX & USSX - Pennsylvania
US Sugar Company - 1960 - Florida - See - Fallen Flags
Utah & Nevada Railway - 1881 - Utah
Utah & Northern Railway (Union Pacific Railroad) (Oregon Short Line) - 1871-1889 - See -
Union Pacific Railroad Chronological History & Railway List
Utah & Pacific Railroad - 1899 - Utah
Utah & Pleasant Valley Railroad - 1879 - Utah
Utah Belt - See - Railway List
Utah Central Railway Company (Denver & Rio Grande) - (UCR) - 1890-1953 / 1992 - UCRY - Utah - See -
Railway List & Rules & R-Marks & Fallen Flags
Utah Central/Utah Southern Railroad - 1870
Utah Coal Route - See - Abbreviations & Slogans & Railway List
Utah Copper Division of Kennecott Copper - See - Railway List
Utah Eastern Railroad - See - Union Pacific Railroad Chronological History
Utah Eastern Railway - 1880 - Utah
Utah-Idaho Central Railroad - 1914-1948 - Utah - See - Streetcars & Pictures & Railway List
Utah-Idaho Central Interurban Railroad - 1923 - Utah
Utah Light & Railway Company - 1901 - Utah
Utah Light & Traction Company - 1914 - Utah
Utah Northern Railroad - 1870 - Utah - See - Railway List
Utah Power & Light - See - Railway List
Utah Railroad - Utah
Utah Railway Company (Genesee & Wyoming Incorporated) - 1912 - UTAH - Utah - See - Abbreviations &
Rules & R-Marks & Railway List & Report
Utah Southern Railroad - 1870 - Utah
Utah Transit Authority- See - Railway List
Utah Western Railway - 1877 - Utah
Utica & Black River Railroad Company (New York Central & Hudson River Railroad Company) -
1861-1913 - New York - See - Railway List
Utica & Schenectady Railroad Company (The) (Mohawk Valley Railroad)
(New York Central Railroad System) - 1833-1851 - New York - See - Railway List & Lineage
Utica, Chenango and Susquehanna Valley Railway Company - 1940s - New York - See - Railway List & Report
Utica, Clinton and Binghamton Railroad Company - See - Railway List & Report
Utica, Ithaca & Elmira Railroad - See - Railway List
Utica, Ithaca & Elmira Railway - See - Railway List
Utli - See - Railway List
Utility Fuels Incorporated - UFIX - See - Client
Utility Power Corporation - KWUX - See - R-Marks
Uvalde and Northern Railway Company - Texas - See - Railway List & Report
Uwanta Egg - See - Railway List
