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| No. | Class | F.M. Whyte | Gauge | Railroad Line | Location | Status | Builder Info | Notes |
|---|---|---|---|---|---|---|---|---|
| 105 (1175) | H-2 | 2-6-0 | 4'-8½" | CB&Q | city park, Buffalo, WY | display | Pittsburgh Locomotive & Car Works #1815, 05/1898 | Donated to Buffalo in 1982. Tender, pilot wheels, smokebox door, and other parts are missing. |
| 2 | D | 4-4-0 | 15" | Cheyenne Steamers, Cheyenne, WY | operational | Cagney, 1911 | ||
| 1242 | T-57 | 4-6-0 | 4'-8½" | UP | Lions Park, Cheyenne, WY | display | Cooke Locomotive & Machine Works #2053, 1890 | |
| 838 | FEF-3 | 4-8-4 | 4'-8½" | UP | UP engine house, Cheyenne, WY | stored | Alco (Schenectady) #72785, 1944 | Used as a spare parts source for UP 844. |
| 844 (8444) | FEF-3 | 4-8-4 | 4'-8½" | UP | UP engine house, Cheyenne, WY | operational | Alco (Schenectady) #72791, 12/1944 | Featured in the TV series 'Shining Time Station'. Only steam locomotive in the United States to never be retired by a major class I North American railroad. Renumbered to 8444 from 1962 to 1989. Taken out of service in 2013. Returned to service in 2016. |
| 4014 | 48841 | 4-8-8-4 | 4'-8½" | UP | UP engine house, Cheyenne, WY | operational | Alco (Schenectady) #69585, 11/1941 | From Pomona, CA. Reacquired by the Union Pacific in July 2013. Restored to operation on May 1, 2019. Converted to burn oil. Temporarily uses the tender of UP 3985. Became the first-ever steam locomotive to be equipped with Positive Train Control. |
| 4004 | 48841 | 4-8-8-4 | 4'-8½" | UP | US 30, Holliday Park, Cheyenne, WY | display | Alco (Schenectady) #69575, 09/1941 | Cosmetically restored in 2018. |
| 4 | D | 4-4-0 | 15" | Como Hot Spring | Wasatch Railroad Contractors, Cheyenne, WY | operational | Cagney, 1904 | History is unclear. May be from Morgan, UT, then Murray, UT, then Heber City, UT or could be from Rockville, IL. For sale. May be located in Newbury Park, CA. |
| 119 | 4-4-0 | 15" | Wasatch Railroad Contractors, Cheyenne, WY | operational | Crown Metal Products (Elizabeth), 1960s | From CT. Restored to operation in 2015. | ||
| 3 | 4-4-0 | 15" | Wasatch Railroad Contractors, Cheyenne, WY | stored | Armitage-Herschell | From Moses Lake, WA in 2006. | ||
| 5633 | O-5A | 4-8-4 | 4'-8½" | CB&Q | Douglas Railroad Interprative Center, C&NW Depot, Douglas, WY | display | CB&Q (West Burlington) #66108, 1940 | Donated by the CB&Q in May 1962. |
| 4420 (1271) | 0-6-0 | 4'-8½" | UP | UP Roundhouse, Evanston, WY | restoration | Lima #1414, 1914 | Moved to the Evanston Roundhouse in December 2020. Restoration to operation is planned. | |
| 3673 (2041) | Y-7 | 2-8-8-2 | 4'-8½" | UP (N&W) | park, Hanna, WY | display | Alco (Schenectady) #61109, 05/1919 | Repurposed into maintenance tender. Sold to the Laramie, North Park & Western in 1947. To the UP in 1951. |
| 900015 (5034) | TTT-4 | 2-10-2 | 4'-8½" | UP | Depot Park, Laramie, WY | display | Baldwin #53705, 09/1920 | Tender only. Repurposed as snow plow in 1955. |
| 535 (6535) | Harriman | 2-8-0 | 4'-8½" | UP | Depot Park, Laramie, WY | display | Baldwin (Burnham) #21790, 1903 | From LaBonte Park, Corpus Christi, TX. |
| 0-4-0T | 4'-8½" | GWSCX | Great Western Sugar Co., Lovell, WY | display | Davenport Locomotive Works #2090, 1927 | |||
| 533 | C-57 | 2-8-0 | 4'-8½" | UP | Elm St., Rawlins, WY | display | Baldwin (Burnham) #21755, 1903 | |
| 5631 | O-5A | 4-8-4 | 4'-8½" | CB&Q | Broadway and 5th, Sheridan, WY | display | CB&Q (West Burlington) #66106, 1940 | Donated by the CB&Q in February 1962. |