Related Clues:

• State capital or its river
• City on the Oregon Trail
• Oregon Trail fort
• Capital NW of Twin Falls
• Gem State capital
• City of Trees
• Oregon Trail city
• Capital of a U.S. state
• Idaho city
• Spud capital
• Idaho's capital
• Western capital
• River to the Snake
• "The Big Potato"
• Northwestern U.S. capital