Related Clues:

• Hayride vehicles
• 46-Across vehicles
• Conestogas
• Some were covered
• They're sometimes circled
• Pioneer carriers
• Chuck and station
• See 25 Across
• Farm carts
• Pioneers' vehicles
• They may be covered and circled
• Trucks
• Horse-drawn vehicles
• Conestogas, e.g.
• open railway trucks as for coal