Have you seen Flea Market Style magazine? I knew I would love it when their first ever issue (just a year or so ago) featured a map of the USA with all the best huge flea market/vintage sales in the country. I just wanted to jump in the Suburban and hit every one of them!
And how do they follow such a trove of information? Why, by listing all the best ‘occasional sales’ in the USA by state. Grab your copy, your GPS, and hit the road.