Library of Congress Subject Headings is an alternative to keyword searching. They can narrow down your search much more effectively than keywords. You can start searching the JFL Catalog in the search box above. Select JFL Catalog from the drop-down menu of searches. From the catalog itself the search box will look like this:
Select Subject from the circled drop-down list.
Here are some good Criminal Justice subject headings to use in your searches:
Crime
Criminal investigation
Criminology
Law Enforcement - United States
Police Administration
Police Chiefs
Police corruption
Police
