Looks like the Longmont Museum (yes, Longmont...) is having an exhibition of bikes through the years. The museum site doesn't say much, but we have some pamphlets at University Bikes and its looks like it could be pretty neat.
The show is up from April 24th to July 3rd, and they have a couple free days listed, otherwise the cost is $5. Check it out if you're in the area and want to see some classic bikes.
photo via the Longmont Museum