UPDATE – M&N Main Line – Schwartzburg to Hilbert A couple of photographs of Cedarburg, Wis., have been added to The Milwaukee & Northern Main Line from Schwartzburg Junction page. The former M&N main line at Cedarburg, Wis., on 11 February 2021. Photograph by Tom Bruss.The former M&N main line at Cedarburg, Wis., on 13 March 2021. Photograph by Tom Bruss. You Might Also Like UPDATE – Reminders of the Main Line – Hilbert Junction to Green Bay November 5, 2022 UPDATE – Our 2022 Open House December 12, 2022 UPDATE – Our 2022 Open House November 26, 2022