The Library has the latest 3 months of the Grand Forks Herald in newsprint and on microfilm back to the beginning - 1879.
The GF Herald web site has free access to articles for the last 7 days and you can pay for articles back to 1996.
NewsLibrary.com indexes the Herald from 1986 to present. Once you find an article use the Library's microfilm for free.
The Newspaper Database indexes and provides some full text from 1991 to present.
For the years of 1923-1980 there is no indexing online or in print.