Bartleby
Bartleby.com: American Political Writing, 1760 1789: The Stamp Act Controversy
This site explains background causes for the British Parliament's passage of the Stamp Act. It also contains arguments against the Stamp Act by famous colonists.
PublicBookshelf Corporation
Public Bookshelf: The Stamp Act of 1765
A discussion of the causes and effects of the Stamp Act of 1765 in the British Colonies of North America.
Colonial Williamsburg Foundation
Colonial Williamsburg: A Summary of the 1765 Stamp Act
From the Colonial Williamsburg website, a great summary of the crisis caused by the British attempts to enforce the Stamp Act in the American colonies.