Intermountain interloper By Faith Finfrock | September 26, 2025 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates Two of Rio Grande’s Krauss-Maffei diesel-hydraulics spent almost three weeks testing on the New York Central in early 1963. Here crews on New York Central Advance BF-3 change at Bellefontaine, Ohio, on February 24, 1963. Photo by Si Herring