Ben M DuganLocal historian Ben M. Dugan has researched and gathered photographs on Berthoud Pass for many years. Growing up in the small town of Empire at the eastern foot of Berthoud Pass has given him a unique insight into the background and history of the ara. This book includes many never-before-seen historical photographs from the author's private collection, as well as those from friends, libraries, private donors, and historical entities. Read More Read Less