UPDATE – M&N Main Line – Schwartzburg to Hilbert New information and photographs of Plymouth, Wis., have been added to the Milwaukee & Northern main line from Schwartzburg Junction to Hilbert Junction page. The former M&N main line at Plymouth, Wis., on 13 March 2021. Photograph by Tom Bruss.A W&S (or WSOR) train passes the former MILW and C&NW depots at Plymouth, Wis., on 13 March 2021. Photograph by Tom Bruss. You Might Also Like UPDATE – Main Line – Fort Howard to Menominee River and Reminders of Same November 27, 2022 UPDATE – Main Line – Menominee River to Ontonagon October 25, 2021 UPDATE – Reminders of the Appleton Branch May 26, 2020