Columbia subject headings:
Chicago (Ill.). Police Department--Periodicals.
Criminal statistics--Illinois--Chicago--Periodicals.
Harvard subject headings:
Chicago (Ill.). Police Department--Periodicals.
Criminal statistics--Illinois--Chicago--Periodicals.
Princeton subject headings:
Chicago (Ill.). Police Department--Periodicals.
Criminal statistics--Illinois--Chicago--Periodicals.
Periodicals.
Police--Illinois--Chicago--Statistics--Periodicals.