In the last year of Monon's small passenger business, high-nose Alco Century 420's 501, 502 and 503 took over for the twenty year old F's. On May 25, 1967 Monon's number 5 departs Chicago's IC Central station with IC E8 4022 looking on. Four months later, on September 29, 1967, the last number 5 left Chicago and Monon became freight only. Photo by Louis Marre, from my collection.