The Western Pacific heritage unit leads IG4TA across the diamonds at UD Tower and by Joliet Union Station.

PRR K4s No. 1361 drifts by ALTO Tower after a trip to Bellefonte. ALTO Tower was constructed in 1880, retired in 2012, and still stands today.

An amply powered Louisville & Indiana transfer comes across the bridge in Louisville to interchange with NS and P&L.

The last westbound Wolverine of the day, 359, heads into the setting sun past BO Tower. The tower is one of two remaining manned interlocking towers in Michigan.

Pan Am's business train passes former JV Tower in Johnsonville, NY as it heads east from Mechanicville, New York. This is the location where the Boston and Maine's Troy Branch once joined the cur... (more)

Westbound CSX GP 40 (B&O 4008) is at A Cabin at Alleghany summit about to enter the tunnel.

An eastbound grain train crosses the CSX Toledo Branch at Dunkirk, passing the tower that once controlled the interlocking.

Local from Warren passes Newton Falls Tower with cars for the westbound siding.

How tomorrow moves, by yesterday

One of CSX Transportation's first Tier 4 locomotives leads train G650 past the historic NJ Cabin that is still miraculously standing... for the time being... (more)

A pair of ex-Erie-Lackawanna SD45-2s pauses by SO Tower, which was virtually destroyed by arsonists in November of 2008 and razed shortly afterward. No. 6658 was built by EMD in November, 1972 as... (more)

On a gloomy afternoon in Los Angeles a pair of BNSF switch engines pause briefly between duties at San Pedro Junction, where UP's San Pedro branch crosses BNSF's busy San Bernardino Subdivision. U... (more)

On its way to the engine terminal, a set of Conrail power takes a crossover controlled by Steel tower. One of the regular operators at Steel tower was the late Eddie Mink, who would hold court wit... (more)

A pair of nine-month-old Chicago & North Western SD50’s lay in front of Broadway tower in Green Bay.

Just two days after “Snowmageddon 2016”, proof of Jonas’ wrath is still evident in Altoona as 156 leads the Pennsylvanian past the former Pennsylvania Railroad Interlocking tower “Alto” ... (more)

"Winter"

An F45/GP40 mutt provides power for an express from Port Jervis past the Rutherford Junction tower.