1921 Twin Cities Lines Electric Line Letter to Trainmen - Left letter is a Reprimand / warning about not passing up passengers during the cold Minnesota Winter "zero weather" Right letter is a warning about accidents and addressed to a Mr. Hess. Both letters are dated December 1, 1921 and signed by different superintendents. These will be shipped in archival sleeves inside a hard mailer, with tracking and insurance for up to $100.