Fort Union Trading Post, Williston, ND ID: 4979 | This file appears in: Fort Union Trading Post Fort Union Trading Post illuminated by the sun's golden light from the west late in the day in mid December. The snow-filled dirt track in the foreground approximates the location of the historic road that once connected the American Fur Company's two major Upper Missouri trading posts, Fort Union and Fort Benton near present-day Great Falls, Montana. | Creator: Fred McVaugh for National Park Service. | Date: ca. 2014 | Source: Fort Union Trading Post Gallery, National Park Service | Rights: Public domain Download Original File CreatorFred McVaugh for National Park Service.SourceFort Union Trading Post Gallery, National Park Service Dateca. 2014RightsPublic domain "Fort Union Trading Post, Williston, ND" appears in: Fort Union Trading Post