Roosevelt County

On a steep plateau, overlooking the Missouri River in 1828, men of the newly-formed Upper Missouri Outfit, would build a trading post near the confluence of the Missouri and Yellowstone Rivers. Fort Union would come to be known as one Read More …

The National Park Service’s Midwest Archeological Center and Fort Union Trading Post National Historic Site staffs conducted geophysical investigations and construction project monitoring at the Fort Union Trading National Historic Site in Roosevelt County, Montana, and Williams County, North Dakota. Read More …