Stage wagons are light horse-drawn or mule-drawn public passenger vehicles often referred to as stagecoaches.
Stage wagons were intended for use in particularly difficult conditions where standard stagecoaches would be too big and too heavy.
Those stage wagons with throroughbraces had an undercarriage like those used by a Concord coach but the thoroughbraces were much shorter and mounted to make sure there was much less motion of the body.
This particular stage wagon type was first recorded near the end of the 18th century in use in eastern North America, US and Upper and Lower Canada.
[1] Their relatively simple design and construction allowed them to be sold by Abbot, Downing at around half the price of full-size Concord coaches.