I had a similar find at a paper show, Mike. A book of stamps with a face value in excess of the price asked for the book.
I like Peter Max art and a month or two ago I picked up one of these posters for $3:
Stole the image from eBay to show what it looks like. It is a 1970 11 x 16 Peter Max piece for the American Cancer Society's no-smoking campaign. It had great graphics and color and was in great shape. I also found a portfolio of lithos from the 1940s showing Los Angeles sights for a buck that my daughter used to decorate her apartment in college. Probably two best cards I ever picked were a W538 Jennings
and a 1948 Kellogg's Pep Mikan RC that ended up a PSA 6.
I also found a sportswriter's archive from the late 1960s-early 1970s that had dozens of great pictures and team issued photos, and even a Minnesota Pipers (ABA) team issue card set that included a pre-rookie card of HOFer Connie Hawkins.
