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Supreme Law Firm: The Supreme Law Library
A large repository of legal articles, documents from well-known court cases, significant legal decisions, and more. Contains numerous primary documents, many relating to governmental history.
US Government Publishing Office
Ben's Guide to u.s. Government: National vs. State Government
Overview of the distribution in powers between the various levels of the United States government.
Thomson Reuters
Find Law: Powers Denied to the States
Resource explains how during the time of the Civil War the Supreme Court used Article I, Section 10, Clause 1 of the U.S. Constitution to show that the Confederation formed by the seceding States had no legal existence. The site also...
Other
Furman University: John C. Calhoun's Address of 1849
This speech by John C. Calhoun was directed at the South, describing their problem, and what the North has done with the Government without the nation's consent. It was signed by the Congressmen from twelve southern states.