I've just gleaned another morsel of information about the Finnish language newspapers Valvoja and Opas. This once again from The Genealogical Society of Finland (!), at (click) ® Finnish Newspapers and Periodicals in Michigan
although the article was originally published in the Michigan History Magazine, Vol. 24, 1940, p. 119-127. I hope this helps.
Quote:Valvoja (1915)
In the fall of 1915 S. Mustanen and others organized the Finnish Republican Printing Company at Calumet and shortly began to issue a bi-weekly newspaper, the Valvoja. Among its editors have been Victor Burman, Kalle Haapakoski, Eetu Aaltio, Into Teljo, Jussi Hinkkanen, and R. W. Suojanen. The paper receives its strongest support from the Apostolic Lutheran and Repubican groups in Northern Michigan; its circulation in 1921 was 9000; in 1926, 6800; in 1932, 8426; and in 1935, 8163.
Opas (1930)
A Republican tri-weekly newspaper begun at Calumet in 1930 under the editorship of Victor Burman and published by the Copper Country Printing Company. It reported a circulation of 5400 in 1932, 6540 in 1935.