LOUISIANA, Mo. — Here’s something to think about during the hottest season of the year.

If you use a road atlas on vacation this summer, thank a man from Louisiana, Missouri.

In the era before Google, Siri and other digital maps, George Clason was the king of cartography.

The Louisiana native made what is considered the first functional guide for getting around at a time when auto travel was just taking off.

And if finding your way from Why Arizona to Why Not Mississippi wasn’t enough, Clason also wrote a best-selling self-help book entitled “The Richest Man in Babylon.”

It’s sold more than two million copies in 26 languages. You can still find it – where else? – online.