Detroit and Mackinac Railroad "The Route of the Turtle" Logo Long Sleeve Shirt

  Detroit and Mackinac Railroad "The Route of the Turtle" Logo Long Sleeve Shirt Logo Printed on Front 100% Cotton Gildan 6.1oz Shirt Color - Orange   The Detroit and Mackinac Railway (reporting marks D&M, DM), informally known as the "Turtle Line", was a railroad in the northeastern part of the Lower Peninsula of the U.S. state of Michigan. The main line ran from Bay City north to Cheboygan; it operated from 1894 to 1992.At the end of 1925 it incorporated 375 miles of road and 470 miles of track; that year the Turtle Line reported 81 million ton-miles of revenue freight and 7 million passenger-miles. In 1967 it reported 124 million ton-miles on 224 miles of road. The Detroit, Bay City & Alpena Railroad, was a 3 ft 2 in (965 mm) narrow gauge[1] short line operated from Bay City northward to the Lake Huron port of Alpena. The line was converted to 4 ft 8 1⁄2 in (1,435 mm) standard gauge in 1886[2] and was reorganized into the Detroit and Mackinac (D&M) on December 17, 18