The camp opened in April of 1941 and closed in 1945. It had a peak population of 650.
Today it's called the United Tribes Technical College. Some CCC barracks buildings and two brick army baracks were fenced and used to house the internees. The first ones were Italian and German seamen. 800 Italians arrived, but soon were sent to Fort Missoula in Montana. The first Japanese American Issei arrived in 1942, but were also transferred to other camps. The Germans were left as the only internees there until February of 1945, but then 650 more Japanese Americans were brought in, these being ones who had renounced their U.S. citizenship and were waiting to be sent back to Japan. The brick buildings remain but the others are gone.
The Bismarck Tribune, Feb. 26, 1942
The Bismarck tribune, March 20, 1942
Lima News, April 19, 1942
The bismarck Tribune, March 2, 1946
Nevada State Journal, March 3, 1946
The first article talks about how some of the internees were arriving in poor clothing and how a heavy armed guard was thrown up around the train. The second article talks about an internee that committed suicide, and notes it was already the second death at the camp, the first death being due to a heart attack.
The middle article I guess is supposed to be considered humorous, but it's not, really. The next article is dated 1946 yet notes 200 internees are still at the camp. Since the war ended in 1945 this shows things weren't always moving really quickly as far as releasing the internees go. The final article is one of those relating to the "study" of how the internees behaved at the camps, treating the entire thing like a sociological lab study.