State Reward Roads Maps 
These one-sided maps appear to have been appendicies to the Biennual reports of the Department of Transportation. (It is not likely these maps were used by motorists, but used by the authorities to track the progress in road improvements in various counties.)
Know issues are: 
1912 Titled "State Reward Roads" (Upper and Lower Peninsula on one sheet)
1914 June 30 Titled "State Reward Roads" (Upper and Lower Peninsula on separate sheets)
1916 Titled "State Reward Roads" (Upper and Lower Peninsula on separate sheets)
1917 Titled "Reward and Federal Aid Roads - Trunk Line Bridges"
1918 July 1 Titled "Reward and Federal Aid Roads - Trunk Line Bridges"
1919 Titled "Trunk Line, Reward and Federal Aid Roads - Trunk Line Bridges"
1920 Titled "Trunk Line, Reward and Federal Aid Roads - Trunk Line Bridges"
1926 Nov 15 Titled "Trunk Line-Federal Aid-and State Reward Improvements"
1928 October 1 Titled "Trunk Line-Federal Aid and State Reward Improvements"
1930 July 1
1932 July 1
1936 July 1
1938 July 1
1940 July 1
1942 July 1
1944 July 1
1946 June 30
All are needed for my collection.
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