Made in USA Champion Sweats

Key Years: 1940s-1980s
Price Range: $15-$60 on eBay 

Before it got picked up by Hanes, Champion was one of (and arguably, still is) one of the illest makers of knitwear. Their logo evolved over time, starting with the initial "Running Man" and evolving to the "Blue Bar" logo in 1973. For the company that invented the hoodie, there's ample vintage sweats available, many of it made with the old-school looming methods that heritage heads go crazy for, and the prices aren't too far-fetched either.