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 Reminders of M&N Update April 6, 2020 NEW – Iron Mountain Iron Ore September 27, 2021 Reminders of M&N Update February 17, 2020