This wheel arrangement was only used in North America and always in tank
locomotives used for suburban service.
| No. | Class | F.M. Whyte | Gauge | Railroad Line | Location | Status | Builder Information | Notes |
|---|
| 12 | | 2-6-6-2 | 4'-8½" | SW Forest Ind |  Pioneer Historical Museum, 2340 N Ft Valley Rd (US 180), Flagstaff, AZ | display | Baldwin #60870, 1929 |  |
| 46 (110) | | 2-6-6-2 | 4'-8½" | CWR (Weyerhauser) | Pacific Southwest Railway Museum, Campo, CA | display | Baldwin #62064, 1937 | |
| 4 | | 2-6-6-2T | 4'-8½" | Clover Valley | Niles Canyon Railway, Sunol, CA | restoration | | Expected to run in April 2010 |
| 1604 | H-8 | 2-6-6-6 | 4'-8½" | C&O | B&O Railroad Museum, Baltimore, MD | display | Lima #7824, 1941 | |
| 1309 | H-6 | 2-6-6-2 | 4'-8½" | C&O | B&O Railroad Museum, Baltimore, MD | display | Baldwin #74278, 1949 | |
| 1601 | H-8 | 2-6-6-6 | 4'-8½" | C&O | Henry Ford Museum, Dearborn, MI | display | Lima, 1941 | |
| 38 | | 2-6-6-2 | 4'-8½" | Weyerhauser | Modoc Northern Siding, Merrill, OR | dismantled | | from fenced-in lot a mile from Great Western Railroad Museum, McCloud, CA, Fred Kepner collection |
| 110 | | 2-6-6-2T | 4'-8½" | RI (Weyerhaeuser) | Black Hills Central Railroad, Hill City, SD | operational | | restoration completed Jan, 2001 |
| 1218 | A | 2-6-6-4 | 4'-8½" | N&W | Virginia Museum of Transportation, Roanoke, VA | display | N&W #340, 1943 | status |
| 8 | | 2-6-6-2T | 4'-8½" | RLC | Chehalis-Centralia Railroad, Chehalis, WA | display | Baldwin #58064, 1924 | from Shelton, WA |
| 108 | | 2-6-6-2T | 4'-8½" | Weyerhaeuser | Northwest Railway Museum, Snoqualmie, WA | display | Baldwin #59087, 1926 | |
| 6 | | 2-6-6-2 | 4'-8½" | Weyerhaeuser | Northwest Railway Museum, Snoqualmie, WA | display | Baldwin #60412, 1928 | |
| 11 | 110t | 2-6-6-2 | 4'-8½" | US Plywood | Northwest Railway Museum, Snoqualmie, WA | restoration | Baldwin #59701, 1926 | |
| 1308 | H-6 | 2-6-6-2 | 4'-8½" | C&O | C.P. Huntington RR Hist Soc, Huntington, WV | display | Baldwin #74277, 1949 | Placed on the National Register of Historical Places on Jan 31, 2003 |
Placed on the National Register of Historical Places on Jan 31, 2003