Large format detailed railroad map of Michigan, illustrating the railway routes through the state at the beginning of the 20th century.
The map illustrates over a dozen electric interurban railroads, which proliferated during the first decade of the 20th century, but then gave way to the rise of the automobile. The Detroit United Railways System, Michigan United Railways Co., and other electric railways are identified.
The key differentiates between Lower Peninsula Roads and Upper Peninsula Roads.
This would appear to be the first edition (OCLC lists no earlier editions with this title), and there was an updated edition in 1913 and perhaps 1914.