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| No. | Class | F.M. Whyte | Gauge | Railroad Line | Location | Status | Builder Info | Notes |
|---|---|---|---|---|---|---|---|---|
| 0-4-0 | 4'-8½" | C&A | B&O Railroad Museum, Baltimore, MD | display | Replica. Named Stourbridge Lion. On loan from the Smithsonian. | |||
| 0-4-0 | 4'-8½" | B&O | B&O Railroad Museum, Baltimore, MD | display | 1927 | Replica. Named York. From the Museum of Science and Industry, Chicago, IL. | ||
| 0-4-0 | 4'-8½" | B&O | B&O Railroad Museum, Baltimore, MD | display | Rebuilt from #7 Grasshopper, Andrew Jackson to resemble the Atlantic. | |||
| 8 | 0-4-0 | 4'-8½" | B&O | B&O Railroad Museum, Baltimore, MD | display | B&O (Mount Clare), 1836 | Named John Hancock. 3rd oldest B&O locomotive in existence. | |
| 1 | 35 ton | 0-4-0F | 4'-8½" | Potomac El Power | B&O Railroad Museum, Baltimore, MD | display | Heisler #43 | From Smithsonian Warehouse, Silver Hills. |
| 4 (714) | 0-4-0T | 4'-8½" | St. Elizabeth Hospital (USATC) | B&O Railroad Museum, Baltimore, MD | display | H.K. Porter #8234, 1950 | Taken out of service in late 2015. Cosmetically restored in 2017. Awaiting future overhaul. When it might return to operation is unknown. | |
| 57 | L | 0-8-0 | 4'-8½" | B&O | B&O Railroad Museum, Baltimore, MD | display | New Castle Man., 1848 | Named Memnon. Sole survivor of this type. |
| 2-2-0 | 4'-8½" | B&O | B&O Railroad Museum, Baltimore, MD | display | B&O (Mount Clare), 1927 | Replica named Tom Thumb. Had been restored to operating condition by the Strasburg Rail Road for the 2004 "Fair of the Iron Horse." It was operated only a few times, the last being around Christmas 2013, then placed on display inside the roundhouse. | ||
| 13 | 2-2-2T | 4'-8½" | Cumberland Valley | B&O Railroad Museum, Baltimore, MD | display | Seth Wilmarth, 1851 | Named Pioneer. On loan from the Smithsonian Museum. | |
| 600 | K | 2-6-0 | 4'-8½" | B&O | B&O Railroad Museum, Baltimore, MD | display | B&O (Mount Clare), 1875 | Named J.C. Davis. Damaged by a roof collapse in 2003. |
| 1604 | H-8 | 2-6-6-6 | 4'-8½" | C&O | B&O Railroad Museum, Baltimore, MD | display | Lima #7824, 1941 | From Russell, KY, then the Virginia Museum of Transportation, Roanoke, VA. One of only two surviving C&O Alleghenies, the other one being C&O 1601 at the Henry Ford Museum, Dearborn, MI. Damaged by a flood in 1985. |
| 545 | E-8 | 2-8-0 | 4'-8½" | B&O | B&O Railroad Museum, Baltimore, MD | display | B&O (Mount Clare), 1888 | Named A.J. Cromwell. |
| 4500 | Q3 | 2-8-2 | 4'-8½" | B&O | B&O Railroad Museum, Baltimore, MD | display | Baldwin #49153, 1918 | First USRA locomotive built. |
| 2705 | K-4 | 2-8-4 | 4'-8½" | C&O | B&O Railroad Museum, Baltimore, MD | display | Alco (Schenectady) #70854, 1943 | From Russell, KY. |
| 13 | 4-2-0 | 4'-8½" | B&O | B&O Railroad Museum, Baltimore, MD | display | B&O (Mount Clare), 1927 | Replica. Named Lafayette. In 2015, it was fired up and operated for demonstration purposes. | |
| 25 | F | 4-4-0 | 4'-8½" | B&O | B&O Railroad Museum, Baltimore, MD | display | Mason Machine Works #46, 1856 | Named William Mason. Used to be oldest operational standard gauge steam locomotive on earth, featured in 'The Great Locomotive Chase' (1956). Previously operated in 2012. Cosmetically restored in 2017. |
| 592 | P-6s / A-28 | 4-4-2C | 4'-8½" | CNJ | B&O Railroad Museum, Baltimore, MD | display | Alco (Brooks) #25997, 1902 | |
| 377 (108) | F-11 | 4-6-0 | 4'-8½" | C&O (CR&M) | B&O Railroad Museum, Baltimore, MD | display | Baldwin #21329, 1902 | |
| 1 | G7 | 4-6-0 | 4'-8½" | Clinchfield | B&O Railroad Museum, Baltimore, MD | display | CC&IC Logansport, 1882 | Previously operated in 1979. |
| 147 (117) | B | 4-6-0 | 4'-8½" | B&O | B&O Railroad Museum, Baltimore, MD | display | B&O (Mount Clare), 1863 | Named Thatcher Perkins B. |
| 305 (217) | A | 4-6-0C | 4'-8½" | B&O | B&O Railroad Museum, Baltimore, MD | display | B&O (Mount Clare), 1869 | Camel type locomotive. |
| 5300 | P7 | 4-6-2 | 4'-8½" | B&O | B&O Railroad Museum, Baltimore, MD | restoration | Baldwin #59881, 1927 | Named President Washington. Temporarily taken off display in August 2021. Cosmetic restoration only. |
| 490 | L1a | 4-6-4 | 4'-8½" | C&O | B&O Railroad Museum, Baltimore, MD | display | Alco (Richmond) #66555, 1926 | Rebuilt from an F-19 class Pacific boiler and streamlined. |
| 1 (2101) | T-1 | 4-8-4 | 4'-8½" | AFT (Reading) | B&O Railroad Museum, Baltimore, MD | display | Reading Shops, 1945 | American Freedom Train Damaged in a roundhouse fire in Russell, KY in 1979. Traded by Ross Rowland to the B&O Railroad Museum in exchange for C&O 614. Cosmetic restoration to its AFT appearance completed in December 2025. |
| 1 | 80 ton | Shay3Tr | 4'-8½" | CSRR (Greenbrier Cheat & Elk) | B&O Railroad Museum, Baltimore, MD | display | Lima #1519, 1905 | From the Cass Scenic Railroad in Cass, WV. Traded to the B&O Railroad Museum in 1980 in exchange for WM Shay 6. |
| 999 (314) | 4-4-0 | 15" | Blue Mountain Railway | Blue Mountain Railway, Braddock Heights, MD | private operational | Cagney, 1901 | Built for the 1901 Panamerican Exposition in Buffalo, NY. | |
| 2 (618) | 0-6-0 | 4'-8½" | Cooperstown & Charlotte Valley (USATC) | Bill Miller Equipment Sales, Eckhart Mines, MD | private display | Alco (Schenectady) #70420, 1942 | From Cooperstown, NY. It is unclear what the status of restoration is. | |
| 611 (2628) | S-160 | 2-8-0 | 4'-8½" | USATC | Bill Miller Equipment Sales, Eckhart Mines, MD | display | Baldwin #69856, 1943 | From the Tennessee Valley Railroad Museum, Chattanooga, TN. Equipped with poppet valve gear. Cosmetic restoration completed around 2015. |
| 97 | 4-4-0 | 16" | Smokey Joe | Eastern Shore Threshermen & Collectors Association, Federalsburg, MD | operational | Crown Metal Products (Elizabeth), 1961 | From Haines City, FL. | |
| 14 (1) | G-7-S | 2-8-0 | 4'-8½" | BC&G (KC&NW) | Railway Museum, Gaithersburg, MD | display | Alco (Schenectady) #59309, 1918 | |
| 202 | K-2 | 4-6-2 | 4'-8½" | WM | Hagerstown City Park, Hagerstown, MD | restoration | Baldwin #38076, 1912 | The only surviving mainline Western Maryland steam locomotive. Cosmetic restoration only. |
| 76 (40) | 2-8-0 | 4'-8½" | Mississippian (Jonesboro, Lake City & Eastern) | Oakland B&O Railroad Museum, Oakland, MD | display | Baldwin #54265, 1920 | Operated on the Penn View Mountain Railroad from 1967 to 1975, then on the Gettysburg RR from 1976 to 1995, then on the Blairsville and Indiana Railroad. From the Ohio Central Railroad Shops, then Owosso, MI. Displayed as B&O 476. | |
| 4-4-0 | 24" | Frontier City, Ocean City, MD | operational | Crown Metal Products (Elizabeth) |