UPDATE – Main Line – Menominee River to Ontonagon A new photograph and additional information about the Ontonagon depot has been added to the Main Line – Menominee River to Ontonagon page. A DSS&A train poses in front of the CM&StP, or MILW, Ontonagon, Mich., depot ca. the turn of the 20th Century. Photograph courtesy of the Roy Drier Collection - Michigan Technological University Archives and Copper Country Historical Collections. You Might Also Like UPDATE – M&N Main Line – Fort Howard to Menominee River and Menominee River to Ontonagon May 3, 2021 Amberg Museum February 23, 2020 UPDATE – Menasha Branch – Sherwood March 22, 2021