Create an InterLibrary Loan/Document Delivery Services account to request books, book chapters or the full text of an article if it isn't immediately available from the library.
From the website: The Sourcebook of Criminal Justice Statistics brings together data from more than 100 published and unpublished sources about many aspects of criminal justice in the United States. Since 1973.
Using a simple keyword search, Google discovers datasets hosted in thousands of repositories across the Web.
United Nations - Office on Drugs and Crime
UNODC regularly provides global statistical series on crime, criminal justice, drug trafficking and prices, drug production, and drug use.
BJS is the primary statistical agency of the Department of Justice.
Provides datasets that can help guide the exploration and extension of research ideas for topics.