| No. | Class | F.M. Whyte | Gauge | Railroad Line | Location | Status | Builder Info | Notes |
|---|---|---|---|---|---|---|---|---|
| 5 | 0-4-0 | 36" | Armour Phosphate Co. (US Equipment Co.) | Greg Beason, Amory, MS | operational | H.K. Porter #5190, 1912 | From Petticoat Junction Railroad, then Warrior, AL. | |
| 2 | 2-4-2 | 36" | M.A. Patout & Son | Six Flags Over Texas, Arlington, TX | operational | H.K. Porter #1754, 1897 | Originally named Lydia, renamed to Charles Jefferson Patton, known as the Red Train, built as an 0-4-0. | |
| 7 | 2-6-2 | 36" | Eureka Nevada | Silverwood Theme Park, Athol, ID | operational | H.K. Porter #5724, 1915 | ||
| 5 | 7x14 | 0-4-0CA | 36" | Hosmer Mines | Powerland Heritage Park, Brooks, OR | operational | H.K. Porter #4077, 03/1908 | Western Railway Preservation Society Named Hoss. From Dallas, OR. |
| 1 | 0-4-0T | 4'-8½" | DTR | Ironhorse Central Railroad Museum, Chisago City, MN | operational | H.K. Porter #5580, 1914 | ||
| 4 | 0-4-0T-T | 4'-8½" | DTR | Ironhorse Central Railroad Museum, Chisago City, MN | operational | H.K. Porter #6768, 1923 | The only surviving and only operational 0-4-0T-T in the USA. | |
| 3 | 0-4-0T | 24" | CCV | CC&V ng Railroad, Cripple Creek, CO | operational | H.K. Porter #7063, 1927 | Formerly named Vista Grande. From Zacatecas. | |
| 4 | B-P-O | 0-4-0CA | 18" | Homestake Mining | Don Gleason, Eugene, OR | private operational | H.K. Porter #3289, 12/1905 | |
| 1 | 0-4-0T | 36" | Alaska RR | Tanana Valley Railroad, Pioneer Park, Fairbanks, AK | operational | H.K. Porter #1972, 1899 | ||
| 5 | 0-4-0 | 36" | Robinson Clay Products | North County & Pacific Creek Railroad, Fallbrook, CA | operational | H.K. Porter #6536, 09/1921 | ||
| 2 | 0-4-0T | 4'-8½" | Santa Cruz Portland Cement | CA Western Railroad, Fort Bragg, CA | operational | H.K. Porter #4390, 09/1909 | Named Chiggen. From Chicken Kitchen Restaurant, Pollardville, then Stockton, CA, then Snoqualmie, WA, then Folsom, CA. | |
| 0-4-0T | 36" | Gold Strike Express (Cortez Mines) | Ardenwood Railroad, Fremont, CA | stored operational | H.K. Porter #1196, 07/1890 | Named Anne Marie. Originally built as 30' gauge. From Hacienda Hotel & Casino, Boulder City, NV, then Tom , Gazsi and Gary Smith Hayward, CA. | ||
| 7 (110) | 0-4-0 | 36" | Tennessee Coal & Iron | Doe River Gorge, Hampton, TN | operational | H.K. Porter | Once displayed at Dollywood in Pigeon Forge, TN. From Dry Gulch USA, Adair, OK. Propane. | |
| 2 (22) | 2-6-0 | 36" | United Fruit | Hesston Steam Museum, Hesston, IN | operational | H.K. Porter #4581, 03/1911 | From the Black Hills Central Railroad, Hill City, SD. Restored to operation in 2019. | |
| 3 | B-MINE | 0-4-0T+T | 36" | C&HM | Lake Linden & Torch Lake RR, Lake Linden, MI | operational | H.K. Porter #5649, 1915 | Returned to operation in 2025. |
| 1 (22) | B-P-O | 0-4-4T | 18" | Anacortes Railway (Homestake Mining) | Terbeau Ranch & Thompson Railway, Lincoln, CA | operational | H.K. Porter #4322, 04/1909 | Converted from 0-4-0 compressed air by Tommy Thompson, Anacortes Maritime Heritage Center, Anacortes, WA. Previously ran in 1999. |
| 1 (3) | 0-4-0T | 4'-8½" | Koppers Co (New England Wood Preserving) | WMCRR, Clark's Trading Post, Lincoln, NH | operational | H.K. Porter #7171, 1930 | ||
| 2 (3) | 0-4-4RT | 30" | Westfield Plantation (Dugas & Le Blanc) | private, Los Angeles, CA | operational | H.K. Porter #4183, 09/1908 | Named Rosa, moved from Lampasas, TX to southern CA in 2011. May be located at the Santa Rosa Valley Railroad, Camarillo, CA. | |
| 1 | 0-4-0T | 36" | Sacramento Brick (Huntington Hopkins & Co.) | Leslie Wilmunder, Palermo, CA | operational | H.K. Porter #1018, 03/1889 | From Rancho Cordova then Marysville. | |
| 1 | 0-4-0T | 40" | Defiance Coal | Railroad Museum of Long Island, Riverhead, NY | operational | H.K. Porter #6687, 10/1921 | From Rail City, then John Degan, Southampton. Restored to operation in 04/2019. Mounted on trailer and used as a portable display. | |
| 3 | 0-4-0T | 4'-8½" | DTR | Western Minnesota Steam Threshers Reunion, Rollag, MN | operational | H.K. Porter | ||
| 10 (5001) | 0-6-0T | 4'-8½" | Granite Rock (USATC) | near CSRM's locomotive works building, Sacramento, CA | operational | H.K. Porter #7461, 1942 | Taken out of service in 2011. Taken out of service again in 2020. Returned to operation in July 2025. | |
| 4 (34) | 2-4-0 | 36" | Cherokee Wonderland (Carbon Limestone) | Cedar Point & Lake Erie Railroad, Sandusky, OH | operational | H.K. Porter #7348, 03/1942 | To Cherokee Wonderland and named Victoria R., then to Cedar Point and named George R. | |
| 3 (1) | 2-6-2 | 36" | Laurel Valley Plantation (Barker & LePine) | Pacific Coast Railroad, Santa Margarita, CA | operational | H.K. Porter #1790, 1897 | Named Melodia. From Space City USA then Carowinds Amusement Park, Charlotte. Converted from an 0-6-2RT to 2-6-2 in 1964 by Crown Metal Products. | |
| 1 | 6x10 | 0-4-0T | 24" | Standard Mining | Liberty Farms and Flour Mill, Skandia, MI | operational | H.K. Porter #1715, 1896 | Converted from compressed air. From Bow Hill Railroad, Bow, WA. |
| 11 | 0-4-0T | 24" | Anaconda Copper (Raritan Copper) | Edaville USA, South Carver, MA | operational | H.K. Porter #6976, 05/1925 | From Keene, NH, restored at Boothbay. | |
| 1 (15) | 0-6-0T | 4'-8½" | Strasburg (BEDT) | Strasburg Railroad, Strasburg, PA | operational | H.K. Porter #5966, 1917 | Restored to operation in 1999 as a steam-powered version of Thomas the Tank Engine. Used primarily for Strasburg's Day Out With Thomas events. | |
| 3 (5) | 4-B-R | 2-4-0 | 36" | Johns Plantation (Enterprise Plantation) | Kirby Family Farm, Williston, FL | operational | H.K. Porter #4643, 09/1910 | Named Beatrice. Originally built as a 2-4-4RT. From Opryland, Nashville, later Six Flags AstroWorld, Houston, TX, then Six Flags America, Bowie, MD. Converted to diesel hydraulic. |
| 202 (3) | 14 ton | 0-4-0T | 4'-8½" | Pacific Portland Cement | Roots of Motive Power, Willits, CA | operational | H.K. Porter #5512, 1913 | From Clarksburg. Restored to operation in 2022. Privately owned. |
| 58 | 46 ton | 0-4-0T | 24" | Jones & Laughlin Steel | Youngstown Steel Heritage Museum, Youngstown, OH | operational | H.K. Porter #7245, 1937 | Restored to operation in May 2019. Re-gauged from 23 inches. |