NPR political editor Ken Rudin visits a convention of campaign memorabilia collectors. It's a strange world, where one battered button can fetch $15,000 at auction.

Political button from 1920 brings $25,000. By Danielle Arnet The Smart Collector Oct 31, 2015 ... MORE: Since incumbent President Woodrow Wilson declined to run again in 1920, ...

AUBURN | Bill Kline looked intently at display cases Saturday searching for campaign buttons of yesteryear bearing the likeness of the 28th president, Woodrow Wilson.