Location: Carleton, MI - Interlocking Tower
The interlocking tower at Carleton controlled the crossing of the north-south Pere Marquette (later C&O/CSX) and the east-west Detroit, Toledo & Ironton (later CN/I&O).
Photo Info/Credit: Top, a photo of the interlocking tower in Carleton, looking northeast from the diamond. 2nd photo, the conductor picks up orders from the ironman at Carleton. [Both, Charles Geletzke Jr.]