Union Pacific along the Snake River By Angela Cotey | December 29, 2022 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates An A-B-A set of Union Pacific F3 diesels leads a westbound freight along the Snake River 4 miles west of Glenns Ferry, Idaho, in the late 1940s or early ’50s. Henry R. Griffiths Jr. photo