The 1982 civil settlement in the Hampton case was paid jointly by the City of Chicago, Cook County, and the federal government — three separate governmental entities at different jurisdictional levels. For a researcher attempting to establish which federal agency bore institutional responsibility and what level of authorization existed within the FBI for the operation, what specific category of FBI records — released under FOIA as part of the COINTELPRO document collection — would provide the most direct evidence of headquarters-level awareness and approval of the Hampton 'neutralization'?