4-8-4 4503 by Frisco.org Posted on July 11, 2015 4-8-4 4503 4-8-4 4503 Outbound at Lindenwood Yard, St. Louis, Missouri in June 1942 (William K. Barham). This entry was posted in DW Collection, Steam and tagged 4-8-4, 4503, Baldwin Locomotive Works. Bookmark the permalink.