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- Michigan Official Highway Map, April 15, 1948 - After the federal government established a system of numbered and marked highways in 1926, road maps became more popular. During the 1930s, state governments and local tourism offices realized that road maps stimulated tourism and economic development. This map was produced by the Michigan State Highway Department to highlight both highways and improved roads.

- April 15, 1948
- Collections - Artifact
Michigan Official Highway Map, April 15, 1948
After the federal government established a system of numbered and marked highways in 1926, road maps became more popular. During the 1930s, state governments and local tourism offices realized that road maps stimulated tourism and economic development. This map was produced by the Michigan State Highway Department to highlight both highways and improved roads.
- 1942 Winter Michigan Highway Map - After the federal government established a system of numbered and marked highways in 1926, road maps became more popular. During the 1930s, state governments and local tourism offices realized that road maps stimulated tourism and economic development. This map was produced by the Michigan State Highway Department to highlight both highways and improved roads.

- 1941-1942
- Collections - Artifact
1942 Winter Michigan Highway Map
After the federal government established a system of numbered and marked highways in 1926, road maps became more popular. During the 1930s, state governments and local tourism offices realized that road maps stimulated tourism and economic development. This map was produced by the Michigan State Highway Department to highlight both highways and improved roads.