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 – Menominee River to Ontonagon August 1, 2022 UPDATE – M&N High Cliff Spur May 15, 2023 Workin’ on the Railroad – Dutch Door Bridge August 4, 2024