Semi-streamlined By Angela Cotey | August 20, 2019 | 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 St. Louis-San Francisco semi-streamlined 4-8-2 No. 1503 works at Kirkwood, Mo., in 1942. The railroad, best known simply as the Frisco, had 30 such locomotives built by Baldwin from 1923 to 1926. William Barham photo, Don Wirth collection