U.S. GOVERNMENT INFORMATION:

U.S. Supreme Court and lower federal court opinions

• OpenJurist.org, Supreme Court opinions back to 1790; lower court decisions back to 1880
• Google Scholar
  Supreme Court cases since 1791; federal district, appellate, tax, and bankruptcy courts since 1923; state appellate and supreme court cases since 1950
• Supreme Court Opinions, 1990 to present (Cornell Law School)
• Supreme Court Decisions, 1937-1975 via GPO Access and Fedworld

Supreme Court Database
Contains over two hundred pieces of information about each case decided by the Court between the 1953 and 2010 terms.

Judicial Nominations Database (Yale Law Library)

See also the Yale Law Library's guide to Locating Court Records, Briefs and Oral Arguments
(note that some online sources are available to Yale Law School affiliates only).

JUDICIAL INFORMATION

• U.S. Courts (clearinghouse for information from and about the Judicial Branch of the U.S. Government)
• Understanding the Federal Courts (Describes the role, structure, and jurisdiction of the U.S. Federal Courts)
• Supreme Court of the United States