http://usinfo.state.gov/products/pubs/histryotl
n/ - This online textbook gives an Outline to
U.S. History starting with Early America and
ending with the 2004 Presidential election.
http://www.history.com/topics/ushistory - The
History Channel provides loads of
newsmagazine videos and a page for "this
day in history" where you can type in a date
and get important newsworthy events for that
day in history.
http://ocw.mit.edu/OcwWeb/web/courses/cou
rses/index.htm#History - Offers free
downloadable college courses in U.S. and
World history.