Anyone know of a site on the Net which lists line voltages and
frequencies (if ACB) for cities/regions in the U.S. over time (it's all
120V AC give or take a bit, for the most part, after 1919, but earlier
...)?  For example, is there a site on which one could look up, say, the
line voltage (I presume it was DC) of the electric distribution system
in Johnstown, Pennsylvania, at the time of the flood on May 31, 1889?
Or in San Francisco at the time of the 1906 quake/fire?  Or Baltimore at
the time of the 1904 fire?  You get the idea.

TIA!

Mike Freeman < K 7 U I J >