A solid set of Southern Pacific pool power leads Rio Grande's 177 train through Lehi City minutes after sunrise on June 15, 1989. The lead engine is an EMD GP40P-2, one of only three such units on... (more)

Here's the one and only time I've witnessed a Southern Pacific GP40X, not realizing it until the slide was scanned 25 years hence! Apparently the SP had a roster of four of them, built by EMD in 1... (more)