“Modern” reefer of the 1920s By Faith Finfrock | August 15, 2025 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates Pacific Fruit Express was co-owned by Union Pacific and Southern Pacific. This 40-foot class R-30-12 car, built in 1923, had a wood body and steel underframe. It was typical of the thousands of “modern” refrigerator cars through the 1930s. Photo by Standard Steel Car Co.