This is definitely a work in progress. This page captures individual State resources for teaching with primary sources - by state. It is definitely a 'starter pack'. Send me info you might have for your state and I can add it to the list.
Thanks!
This site will be useful for perspectives of events in the northwestern portion of the U.S. Be sure to check "digital object only" so that you don't get that lovely list of things you'd love to see - but can't because they're not digitized. There's lots here to explore.