To find good web resources on archaeological sites, try the following first:
The George and Mary Foster Anthropology Library, UC Berkeley
Archaeological Parks in the U.S.
Center for the Study of the First Americans
Specific Sites:
Archaeology at the Presidio (San Francisco)
Monticello Archaeology
Click on "Download Reports and Data" to get some of the archaeological reports)
Makah Culture and History Links (Ozette archaeological site)
If you do searches in GOOGLE to find information on your topic, remember that you will have to evaluate each site to see if the information is reliable. To evaluate web sites, use the following handout:
You can also use Google Scholar, which is more likely to give you scholarly articles.