The story of a project mapping the Dennys River over 9000 years will be presented at the Merrill Library of the University of Maine at Machias (UMM) on Friday, November 3, at 3 p.m.  Over the last year, students from UMM, under the guidance of Professor Tora Johnson and volunteers from the Dennys River Historical Society (DRHS) collaborated on the creation of an interactive map marking over 480 sites of historical significance, from Meddybemps Lake to the Reversing Falls on Cobscook Bay, encompassing seven towns along the watershed.