F3s down south By Angela Cotey | November 9, 2023 | Last updated on August 7, 2025 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates Southern Railway F3 No. 4144 leads an A-B-B-A set of diesel locomotives on a long freight at an unidentified location. The railroad had 178 F3A units and 76 F3Bs, built between 1946 and ’49. E.P. Dandridge Jr. photo