Years in print:
The National Tribune was an eight-page, five-column weekly, published by J.W. Wilson in the interests of colored people. The first number was issued on May 3, 1876. It lived some seven or eight years, counting interruptions in its publication.
(From the Encyclopedia of the History of Missouri by Alexander N. De Menil, 1901).
Another source says the paper was Republican.
The National Tribune, an eight-page weekly, was founded May 3, 1876, by J.W. Wilson...A large circulation is claimed in the Southwestern States. The editor, Mr. Wilson, is a colored man of influence. In July, 1882, he was appointed deputy collector of city and State taxes.
(From the History of St. Louis City and County by John Thomas Scharf, 1983).