US National Archives
Nara: Declaration of Independence
The National Archives and Records Administration (NARA) provides an extensive overview of the Declaration of Independence. View the actual document, explore the history of the document as well as it's "stylistic artistry," and much more.
C-SPAN
C Span American Writers: The Declaration of Independence
A brief summary of The Declaration and Constitution by Thomas Jefferson and others. Also includes an on-line text of the work as well as links to other information websites.