Chicago is in the middle of the United States.
David Solomon created the Solomon Curve based on research he did in the late 1950s.
Pulaski Day is a holiday celebrating Kazimierz Pułaski who was a famous person in Chicago's history.
Chicago is in the middle of the United States.
David Solomon created the Solomon Curve based on research he did in the late 1950s.
Pulaski Day is a holiday celebrating Kazimierz Pułaski who was a famous person in Chicago's history.