SECOND QUARTER 2026: Monongahela Connecting Railroad supported the operations of Pittsburgh’s Jones & Laughlin Steel from 1885 until the end of operations in 2002. Gordon Lloyd, Jr. covers this Pennsylvania-based industrial railroad’s history and diesel motive power, while Martin Young reviews the development and use of converted diesel locomotives as fuel tenders on the Soo Line. Four former GP20 and GP40 units were converted for this service in 1987, and lasted into the early 2000s. All this and more in the Second Quarter 2026 issue of Diesel Era!
Santa Fe U30CGs for the Holidays
General Electric U30CG units provided relief to Santa Fe in the 1960s replacing older first generation diesels for freight and passenger service.
2024 Locomotive Production in Review
The year 2024 saw incremental growth for Wabtec; Progress Rail seems to have hit a stride of around 120 locomotives a year; and Siemens continues to maintain its position as the dominant passenger locomotive provider.
Naugatuck Railroad paints U23B into colorful Semiquincentennial livery
Connecticut’s Naugatuck Railroad has painted its U23B into a semiquincentennial livery inspired by the Delaware & Hudson’s bicentennial units.
Lake State Railway Company purchases four SD70ACe-T4 locomotives from Progress Rail
Michigan-based regional freight railroad Lake State Railway Company is purchasing four SD70ACe-T4 locomotives from Progress Rail.
Freight Car Classics: Conrail Boxcars
A collection of classic Conrail boxcars inherited from six bankrupt railroads of the Northeast in 1976.

















