By Vikki McLaughlin Of The Montana Standard Historical research becomes a labor of love for Tech professor.
Time changes everything.
Rivers change course, widening, narrowing, winding where they once were straight. Landscapes change, even the magnetic North Pole changes over time. So, too, has Bob Bergantino's study of Lewis and Clark's legendary journey across North America changed - from an interest in history to a hobby that has become nearly a life's work. Of course, pinpointing, as Bergantino points out, does not necessarily mean finding the exact location of a campsite. A point on a map may cover 100 square feet, or 1,000.