Textbook Links
If you look to the side of this post you can see some textbook links I found in the past two years, but here are more. Even if you don't have the books, they are worth a visit for short topical videos, quizzes, primary source documents and more. I found them all here.

Social Studies

Glencoe	Holt Reinhart Winston Online Learning	Houghton Mifflin	Macmillian McGraw Hill
Harcourt	Holt Reinhart Winston	Houghton Mifflin We the People	Scott Foresman