Oregon Historical Society - Preserving, collecting, and publishing Oregon's multicultural history through museum exhibitions, research collections, and publications. Fairview-Rockwood-Wilkes Historical Society - Stimulate an interest in and preserve the history of the Fairview, Rockwood, Wilkes areas of East Multnomah County Oregon. Pacific Railroad Preservation Association. - A non-profit, all-volunteer organization dedicated to restoring, maintaining, and operating historic railway equipment of the Pacific Northwest. Oregon Archaeological Society - Organizes forums for members to learn and discover Oregon's history by site tours, camp-outs, and supervised digs in the desert. The National Railway Historical Society - The society is a non-profit organization which was formed in 1935 for historical and educational purposes. Oregon Electric Railway Historical Society - The mission is to preserve the regional heritage of electric railway transportation as a living resource for the benefit of the present and future generations.