Train 4 By Brian Schmidt | November 1, 2021 | Last updated on August 8, 2025 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates Train 4 Pere Marquette’s unnamed Grand Rapids–Detroit train 4 rolls through Trowbridge, Mich., in 1940. Locomotive 712 is one of 12 class SP-3 4-6-2 Pacifics built by Alco’s Brooks works in January 1921. Classic Trains collection