I recently bought a copy of a 60-page booklet called The Long Ago. It is a compilation of articles written by a Charles H. Lee for the Mountaineer Press out of Walhalla, ND back in 1899. The booklet itself was published in 1996.
What's so fascinating about The Long Ago are the stories it contains about the early Pembina/St. Vincent area. The booklet does not explain Mr. Lee's sources, but I assume he was using extent materials and/or oral history of his time. I hope to get more background to share with you in the near future. What I have been able to find out (thanks to Jim Davis, reference librarian at the ND State Archives) was that Mr. Lee was the editor of the paper back then.
For now, here is an example of the booklet's first page: