On my way out to Colorado, one of the must see's on my list was Monkey Wrench Cycles in Lincoln, Nebraska. For years we've been told tales of grandeur regarding this shop and their awesome collection of bikes and cycling ephemera. It did not disappoint.
Not only is Nate amongst the raddest dudes, but his vintage mtb collection is one of the best in the country. Check it out.
If you're in the area, you definitely need to check it out.