To the best of my knowledge, the first hint of the end-cab diesel switcher was in the form of Westinghouse's 1929 "visibility cab." Eleven such units were built, between 1929 and 1937, and I am aware of two in preservation. One is at Illinois Railway Museum, and the narrative reveals a few fits and starts, including the placement of the cab. That diesel is a project, and, like everything else in railway preservation, it takes donor money and volunteer elbow grease to at least make it presentable, let alone operable.
Another is at the Pennsylvania Trolley Museum near Washington, Pennsylvania, and that one has several stories.
Its work assignment was at Armco's Butler Works, the Illinois example having worked at a different Armco property, and the steelmaker refurbished the diesel before shipping it to the museum. The diesel cannot venture too far, as the museums's trolleys use the Pennsylvania broad gauge (something done at the behest of, take your pick, the existing steam railroads wanting to preclude interchange with those upstart trolley lines, or the residents of the cities not wanting interchange freight service on their streets) while the diesel is the standard U.S. railroad gauge, useful for moving those gondolas of scrap and boxcars of refractory brick that came in from throughout the railroad system around the plant.
Because the diesel works, it can be used, and I understand during a recent power outage, it was used, as the backup generator for the trolley lines. You couldn't do that at Union with the five car North Shore train and the four car Roarin' Elgin wood train out on the lines, but one Pennsylvania trolley at a time is not a problem.
The museum is worth a look (weekends only) if you're in the Pittsburgh area. Easy on or off of Interstate 79 near the Interstate 70 connection. The museum does offer a parking lot shuttle during the Washington County Fair. A center-entrance Philadelphia and West Chester Car can haul a lot of fair goers.
These post-War St. Louis streamlined cars, which might have been the last interurban cars built until 1982, and, although they look like PCC streetcars from the folding doors to the windshields, they're not streetcars.
The museum has all of its rolling stock under roof, and a well-equipped maintenance shop.
There are two of the center-entrance cars, one of which is still a long way from ready for public use, and two of the streamlined interurbans, at least one of which will be ready for the Fair crowds. The museum has ambitious plans for a visitor center and urban scene (yes, much like the Illinois project) and a larger park-and-ride lot for Fair weekend. Perhaps there will be two-car trains, which was the practice in Philadelphia back in the day, time, elbow grease, and money permitting.
There's still summer to go. Find yourself a preservation railway and ride it.







