Here is a quick source of links to agencies and some key government documents dealing with government information policy.
OMB Watch is a nonprofit government watchdog organization whose mission is to promote open government, accountability and citizen participation. One of its major issue areas is Information Access. On its website, it lists several specific categories of information access issues that it tracks: Homeland Security, Environmental Right to Know, Data Quality Act, Peer Review, Politics & Science, Freedom of Information, Whistleblowers, and State Policies. In most of these policy areas, they have a useful page devoted to “Gov Docs” where they link to agencies and official and unofficial sources of laws, regulations, and reports dealing with government information policy.