Addendum--when visiting Butte several years ago, I thought for sure I read somewhere that Sam Clemens was an editor of a local paper in Butte, but I may be wrong, and it may have in fact been Virginia City, then part of Montana territory--but Virginia city being a gold miners haven, had its share of extra curricular activity, googling Montana and Clemens, did indeed find where he wrote for a short time for the paper there--sorry about the wrong info.
