Everything old is new again-and that's a good thing! If you've always wanted to collaborate with your history teacher using the Library of Congress (LOC) American Memory Project, but felt overwhelmed by the prospect of having to actually develop lesson plans and collect all of the digital material needed, then it's time to revisit the idea of teaching with primary sources.
It looks like they have done a nice job revamping the "American Memory" website. It is definitely much more user-friendly from previous versions. I highly recommend introducing SS teachers to this amazing tool.