A YouTube video with a short cameo of back-to-back F'3's heading into Dearborn Station, probably ready to couple onto No. 5 for its 10:05am departure. Circa 1959. Some neat vintage Erie, AT&SF, C&EI and C&WI footage here as well.
https://www.youtube.com/watch?v=xTtWjCWTnEs The Monon footage starts at 5:10.