Scott Foresman Social Studies: http://www.onlinelearningexchange.com
Scholastic Ellis Island: http://teacher.scholastic.com/activities/immigration/tour/
Social Studies For Kids: www.socialstudiesforkids.com
I Like to Learn: www.ilike2learn.com (geography games)
Time Life For Kids: www.timeforkids.com
Sheppard Software: http://www.sheppardsoftware.com/
Women Hall of Fame: www.greatwomen.org