Bill Kulsea and Tom Shawver, Making Michigan Move (1980)
“ Earle and Frank F. Rogers. As state highway commissioners in the first three decades of this century, they pushed Michigan from mud to mobility. There were others, true, for it takes many people, not just cement, asphalt and machinery, to build roads over swamps, rock, rivers and forests. Yet this diverse pair will always stand tall in the pantheon of early road builders. They built the foundation for the Michigan Department of Transportation and its forerunner, the Michigan State Highway Department. Earle was Michigan's first highway commissioner, serving from 1905 to 1909. ”
