I wish I could find it again, but some years ago I purchased a book of Indiana maps from the 50s and 60s. Because Indiana is right on the border between the Ea

I wish I could find it again, but some years ago I purchased a book of Indiana maps from the 50s and 60s. Because Indiana is right on the border between the Eastern and Central time zones, and because we have Chicago (on Central) nearby, the state has been in a tug of war between the two time zones for decades. I found a series of time zone maps in the book, and over the span of a few years, the parts of Indiana that observed Eastern vs Central changed every year. Individual counties or cities would be in Eastern one year, Central the next. I’m quite grateful that finally (mostly) stabilized; I can’t imagine the headaches it would cause today.