Documents, forms, registrations, applications, etc.:
Responsible Gun Ownership Ordinance (Effective July 12, 2010)
Chicago Firearms Rules and Regulations
Chicago Firearms Permit Application
Chicago Firearms Registration Form
SCOTUS Transcript of Oral Arguments in McDonald v. Chicago
Official slip opinion from the U.S. Supreme Court
From Gun Violence to Civic Health: A Whole of City Approach to Creating Chicago”s Future (pdf)