This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: conservative contrast stretch (no clipping).
Higher quality copy of photo courtesy of the Michigan Department of Transportation. Original publication in Kulsea, Bill (1980) Making Michigan Move: A History of Michigan Highways and the Michigan Department of Transportation, Lansing, MI: Michigan Department of Transportation, p. 10
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{{retouched|conservative contrast stretch (no clipping)}} ==Summary== {{Information | description = Hand-painted centerline on state highwayM-15 in [[w:Marquette County, Michiga