Three bikes from the same seller just south of Missoula, all 56 cm. (I've contacted the seller, but have no association with his sales.):
"Bicycles Braxton" project (for $200, it looks like a good deal just for the components)
~1985 Lighthouse Columbus SLX $225
1973 Scwhinn World Voyager (Panasonic-made) $175:
Notice the 60 cm RB-1 hiding behind the Lighthouse and Schwinn? I contacted the seller and he hasn't posted it for sale yet, but it's too big for him and he's willing to sell it.