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An empty unit coal train out of Chicago (Extra 6742 West) meets the local (Extra 6055 East) at Princeton on September 7, 1976.
The CB&Q installed automatic block signals on 21 miles of double track between Mendota, IL and Princeton and seven miles of double track between Wataga and Galesburg in 1918. The following year, it installed block signals on 82 miles of double track between Princeton, IL and Wataga. It installed CTC from Aurora to Bristol in 1964, Bristol to Mendota in 1965, and Mendota to Buda in 1966. Disk 111