I recently found a site hosted by Bartleby that makes many, many historical and literature great book classics available to read at no charge. I have a partial set of the Harvard 5 feet of classics, but now it is not an issue – we can just read them on Bartleby.com. When my kids are ready for anatomy in earnest, they can read Gray’s Anatomy complete with all the pictures and diagrams. And oodles of maxims, which will come in handy when my kids start their 7th grade writing lessons in a month or so.
Take a look and I am sure you can find something interesting to add depth to history lessons with your 
kids.
