UPDATE – Main Line – Menominee River to Ontonagon Two new photographs and additional information about the Rockland and Ontonagon depots have been added to the Main Line – Menominee River to Ontonagon page. A CMStP&P, or MILW, F7 A-B-A set at the Ontonagon, Mich., depot on 14 May 1977. Photograph courtesy of the Daily Mining Gazette Collection - Michigan Technological University Archives and Copper Country Historical Collections.The CM&StP, or MILW, depot at Rockland, Mich., ca. 1900. Photograph courtesy of the Roy Drier Collection - Michigan Technological University Archives and Copper Country Historical Collections. You Might Also Like UPDATE – Reminders of the Main Line – Fort Howard to Ontonagon April 21, 2024 UPDATE – Main Line – Hilbert Junction to Green Bay October 23, 2023 UPDATE – Our 2022 Open House December 5, 2022