Overall view of CLY Interlocking Tower and adjacent Station. CLY controlled the junction of the PRR's Northern Central Branch to Baltimore along with the PRR's Atglen & Susquehanna line to Columbia. The 2 tracks closest to the tower are the Northern Central Branch. This tower used an Armstrong Lever Machine. It was taken out of service sometime in 1985 or 1986 and demolished in the late 1980's.