High-nose U25B demonstrator

General Electric 2504 was one of four red-and-white U25B demonstrator diesels that toured the nation in 1962. One, No. 2501, was the first U25B with a low nose; the others had the high nose that was just then falling from favor. Nos. 2501–2504 went to Union Pacific after their tour.
Photo by J. David Ingles