The Avalon Project is a free resource that my honors level US History students have been taking advantage of for last couple of weeks. The Avalon Project, produced by Yale University, provides digital copies of hundreds of original documents from a myriad of topics in US History.
Applications for Education
The Avalon Project is a good resource for students that need to find digital copies of original documents. For example, all of The Federalist Papers are available on the Avalon Project website.