Thanx for the clarification, Scot.
There is an EMD switcher working locally that might (barely) qualify. Pope & Talbot 915 was rebuilt by EMD in 2/58 as an SW900m, but was built as CRI&P 514, an SW model built originally in 3/38. It ought to make the list as its still a 900HP SW series switcher. Sorry, no photo as photos are not allowed of any of T&Ps internal operations. It switches a pulp mill in Nanaimo, BC.