NORTH CHICAGO — The city is gearing up for a celebration this summer of its 100th anniversary of incorporation.While the city was incorporated under its current name in 1909, it was first incorporated on May 7, 1897, as the village of South Waukegan. The Washburn and Moen Manufacturing Co., which purchased land south of Tenth Street in 1891 for its Waukegan Works wire mill and housing for its …