Back when America's streets were still mostly paved with dirt, a few hardy entrepreneurs strung together the first transcontinental thoroughfare and called it the Lincoln Highway.
In the century that's followed, commerce, car culture and interstate highways mushroomed around it. But believe it or not, most of it is still here today, wending its way through small towns, past front porches and through the lives of regular Americans.
Now, two travelers who know it well tell us about it in a new book.
This hour On Point: we take a slow drive down the Lincoln Highway to meet our fellow Americans, taste their pie and do a little sightseeing.
Michael Wallis (author) and Michael Williamson (photographer) of "The Lincoln Highway: Coast to Coast from Times Square to the Golden Gate."
This program aired on August 3, 2007.