Interesting links. So the situation in Indiana is even more complex than I first thought!
In Western Europe the time zones just follow national boundaries:
http://www.worldtimezone.com/time-europe.htm Britain went on to permanent daylight savings during WWII as well. There was a similar experimental period of staying an hour ahead in the late 1960s/early 1970s.
There is a lot more interesting background (including details of each U.S. state) at this site:
www.greenwichmeantime.com [This message has been edited by pauluk (edited 03-13-2003).]