An HOS in USA treasure-trove

Many of you may know the previous incarnation (in-Web-nation?) of Clark Elliot's extraordinary database on the history and historiography of American science. It has just received a face-lift and is better than ever. Check it out here.

I am particularly impressed by the 19th century chronologies, which are even complete enough to note the foundation of the US's first permanent agricultural society. See for yourself.