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 MILW Ontonagon, Mich., depot circa 1901. Photograph courtesy of the Michigan Technological University Archives and Copper Country Historical Collections. You Might Also Like UPDATE – Main Line – Menominee River to Ontonagon July 17, 2022 UPDATE – Reminders of the M&N Main Line – Schwartzburg Junction to Hilbert Junction October 12, 2020 NEW – M&N Neenah Branch April 11, 2021