| No. | Class | F.M. Whyte | Gauge | Railroad Line | Location | Status | Builder Info | Notes |
|---|---|---|---|---|---|---|---|---|
| 4219 | AC-10 | 4-8-8-2 | 4'-8½" | SP | Oregon Rail Heritage Center, Portland, OR | operational | Baldwin #64310, 1942 | Tender only. Engine sold for scrap in 1958. Used as an auxiliary water tender for both SP 4449 and SP&S 700. Leased to the Ogden Shops, Alberta, CAN from May 2023 to May 2024 for use behind CPKC (CPR) 2816 for its continental tour from April to July 2024. |
| 4294 | AC-12 | 4-8-8-2 | 4'-8½" | SP | California State Railroad Museum, Sacramento, CA | display | Baldwin #70101, 1944 | Became the last Cab Forward built for the SP. Became the only surviving SP Cab Forward in preservation. |