UPDATE – Main Line – Menominee River to Ontonagon Four new photographs and additional information about Ontonagon and Mass Station have been added to the Main Line – Menominee River to Ontonagon page. CMStP&P/MILW 5925 at the Mass Station, Mich., depot. Photograph courtesy of the Rev. Herman Page Collection - Michigan Technological University Archives and Copper Country Historical Collections.The CMStP&P, or MILW, depot at Ontonagon, Mich., circa the 1970s. Photograph courtesy of the Earl Gagnon Collection - Michigan Technological University Archives and Copper Country Historical Collections.The CM&StP, or MILW, depot at Mass Station, Mich., in 1905. Photograph courtesy of the Elma Lukkarita Collection- Michigan Technological University Archives and Copper Country Historical Collections.The former CM&StP, or MILW, depot at Ontonagon, Mich., on 17 October 2021. Photograph by Tom Bruss. You Might Also Like UPDATE – Reminders of the M&N Main Line – Schwartzburg Junction to Hilbert Junction October 12, 2020 UPDATE – M&N Main Line – Fort Howard to Menominee River and Menominee River to Ontonagon May 3, 2021 UPDATE – Reminders of the Menasha and Neenah Branches September 26, 2025