I recently found out about a website (www.consource.org) that is dedicated to compiling documents from the times of our founding fathers, before and after the Revolutionary War, the establishment of our Constitution, etc etc.
These include the Declaration of Independence, The Constitution of The United States of America, the Bill of Rights, The Federalist Papers, journal notes from the conventions and congressional meetings regarding these important issues.
It even has a section showing us SOME of the sources used in the recent controversial DC vs Heller case.
I encourage you to take advantage of this site, which is making documents previously unavailable to the average citizen, readily readable by anyone right here online. Not every source has been incorporated into this site, but they are working on it over time, including taking information one might have on such documents.