Our friend Don Matthesen of Spearfish, South Dakota was kind enough to pass along this clipping from the Sundance (WY) Times of 1 March 2012. It was part of their "Peek at the Past" features, which seems to be a popular feature in most newspapers in these parts.
Here's the story from the Sundance Times on March 3, 1897:
Bartlett Richards of Chadron, Neb., who will be remembered as one of the pioneer cattle kings of Crook county, was married to his niece, Miss Inez Richards at Berlin, Prussia, on February 1. Quite a bit of romance attaches to this wedding. The laws of America forbid the marriage of blood relations, and as Bartlett was determined to marry his niece and her parents offering no objections, they went to Berlin, accompanied by the lady's mother, resided there a sufficient length of time to acquire citizenship and were legally married.