Possible Clues:

• Physical structure shortly to be seen moving west across northern state
• One day leather-worker said to be in a state
• A small particle rotated, maintaining new state
• Mountainous US state, capital Helena
• Quarterback Joe
• US state — NATO man (anag)
• In Vermont, an American state
• American state, capital Helena
• The Bitterroot Range is on its western border
• Home of Glacier National Park