Above, an early photo of the Michigan Central depot at Sterling, in Arenac County.  Below, this "wig-wag" railroad crossing traffic signal was located for many years in Sterling, Michigan.  Most probably installed under New York Central ownership in the first half of the 20th century, the signal lasted through Penn Central, Detroit & Mackinac and Lake State ownership.  The signal was removed in the late 1990's.  It was one of the last, if not the last, wig-wag signals in Michigan.  [Tom Decker photo]