The Prairie Cycle Club (PCC) was founded in 1971 in Urbana-Champaign, IL. For years they ran Spring and Fall Centuries (and Metric Centuries). Here's a handful of patches from those rides.
NOTE: None of these are for sale. If you have any patches not pictured here, please send me a scan (or, if you no longer want them, send them my way and I'll add them to the collection).
