> much of it related to Niagara Falls and other power systems > modeled after it.
The IIRC oldest US generating station still in operation (on original hardware anyway) is at Mechanicville, NY. It is hydroelectric and originally fed 40 Hz AC to Schenectady. They just sped up the alternators when they connect it to the 60 Hz grid! I hear the European equivalent of US 25 Hz traction power is 16.6 Hz. Thanks, Jonathan
