Bibliographies of the War for Independence compiled by the US Army Center for Military History. The "be all end all" of recommended reading lists! Includes lineages(unit histories) for all regular Continental troops-infantry, artillery, and cavalry.
Documents of Freedom with texts of the Declaration of Independence, the Bill of Rights, and the Constitution.
The Early America Review: original articles on 18th c. topics by noted experts; the Keigen and Matthews collection of 18th c. documents viewable online; the Town Crier -- a bulletin board messaging system to dialogue with others interested in history.