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| No. | Class | F.M. Whyte | Gauge | Railroad Line | Location | Status | Builder Info | Notes |
|---|---|---|---|---|---|---|---|---|
| 0-4-0 | 4'-8½" | B&O | National Museum of Railroad History & Innovation, Baltimore, MD | display | Rebuilt from #7 Grasshopper, Andrew Jackson to resemble the Atlantic. | |||
| 8 | 0-4-0 | 4'-8½" | B&O | National Museum of Railroad History & Innovation, Baltimore, MD | display | B&O (Mount Clare), 1836 | Named John Hancock. 3rd oldest B&O locomotive in existence. | |
| 0-4-0 | 4'-8½" | C&A | National Museum of Railroad History & Innovation, Baltimore, MD | display | Replica. Named Stourbridge Lion. On loan from the Smithsonian. | |||
| 0-4-0 | 4'-8½" | B&O | National Museum of Railroad History & Innovation, Baltimore, MD | display | 1927 | Replica. Named York. From the Museum of Science and Industry, Chicago, IL. | ||
| 1 | 35 ton | 0-4-0F | 4'-8½" | Potomac El Power | National Museum of Railroad History & Innovation, Baltimore, MD | display | Heisler #43 | From Smithsonian Warehouse, Silver Hills. |
| 4 (714) | 0-4-0T | 4'-8½" | St. Elizabeth Hospital (USATC) | National Museum of Railroad History & Innovation, 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 | National Museum of Railroad History & Innovation, Baltimore, MD | display | New Castle Man., 1848 | Named Memnon. Sole survivor of this type. |
| 2-2-0 | 4'-8½" | B&O | National Museum of Railroad History & Innovation, 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 | National Museum of Railroad History & Innovation, Baltimore, MD | display | Seth Wilmarth, 1851 | Named Pioneer. On loan from the Smithsonian Museum. | |
| 600 | K | 2-6-0 | 4'-8½" | B&O | National Museum of Railroad History & Innovation, 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 | National Museum of Railroad History & Innovation, 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 | National Museum of Railroad History & Innovation, Baltimore, MD | display | B&O (Mount Clare), 1888 | Named A.J. Cromwell. |
| 4500 | Q3 | 2-8-2 | 4'-8½" | B&O | National Museum of Railroad History & Innovation, Baltimore, MD | display | Baldwin #49153, 1918 | First USRA locomotive built. |
| 2705 | K-4 | 2-8-4 | 4'-8½" | C&O | National Museum of Railroad History & Innovation, Baltimore, MD | display | Alco (Schenectady) #70854, 1943 | From Russell, KY. |
| 13 | 4-2-0 | 4'-8½" | B&O | National Museum of Railroad History & Innovation, 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 | National Museum of Railroad History & Innovation, 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 | National Museum of Railroad History & Innovation, Baltimore, MD | display | Alco (Brooks) #25997, 1902 | Only surviving Atlantic type camelback in the US. |
| 1 | G7 | 4-6-0 | 4'-8½" | Clinchfield | National Museum of Railroad History & Innovation, Baltimore, MD | display | CC&IC Logansport, 1882 | Previously operated in 1979. |
| 147 (117) | B | 4-6-0 | 4'-8½" | B&O | National Museum of Railroad History & Innovation, Baltimore, MD | display | B&O (Mount Clare), 1863 | Named Thatcher Perkins B. |
| 377 (108) | F-11 | 4-6-0 | 4'-8½" | C&O (CR&M) | National Museum of Railroad History & Innovation, Baltimore, MD | display | Baldwin #21329, 1902 | Saved from scrap to celebrate the first C&O locomotive in Clifton Forge, VA and modified to look older. It was later donated to the B&O Museum. |
| 305 (217) | A | 4-6-0C | 4'-8½" | B&O | National Museum of Railroad History & Innovation, Baltimore, MD | display | B&O (Mount Clare), 1869 | Camel type locomotive. |
| 5300 | P7 | 4-6-2 | 4'-8½" | B&O | National Museum of Railroad History & Innovation, 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 | National Museum of Railroad History & Innovation, 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) | National Museum of Railroad History & Innovation, 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) | National Museum of Railroad History & Innovation, 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 | display | Alco (Schenectady) #70420, 1942 | From Cooperstown, NY. Privately displayed. | |
| 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 sometime 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 | Built as an 0-8-0. A 1956 accident put it out of service for a period. Retired and abandoned in 1963 when the Rich Run Mine closed. Relocated to the Gaithersburg Museum in 1990. |
| 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) |