OUSD Urban Dreams Social Studies & History Resources a host of online resources from OUSD's Urban Dreams Project which ended in June 2004. Note the links are no longer being maintained and may therefore be outdated or broken. Still some valuable resources here.
OUSD Urban Dreams Social Studies Lesson Plans - OUSD teachers wrote and published these lesson plans covering many topics including American History. http://urbandreams.ousd.k12.ca.us/lessonplans/
OUSD Library Services Page - links to all reference databases
SCORE > History / Social Studies Resources external site
Public Domain Images - for Use in Multimedia Projects and Web Pages
Many of the images in these collections are in the public domain. Although you may not need to ask permission to use them when publishing on the Web for educational purposes, you still must cite these images unless otherwise notified. If you see any copyright notices on these pages, read them for further instructions. http://mciunix.mciu.k12.pa.us/~spjvweb/cfimages.html