Hosted and administered by the Phillips Museum of Art at Franklin & Marshall College, the Franklin Artifacts database is a museum without walls; an electronic catalogue of known surviving objects with a close association to Benjamin Franklin. The site is online at www.benfranklin300.org/frankliniana
Short videos (of the highest quality) on Franklin are at the History.com topic page. URL: http://www.history.com/topics/american-revolution/benjamin-franklin
Franklin’s quote about “a republic, if you can keep it” is cited daily somewhere on the Internet, it seems. This posting is the first I’ve noticed that identified the woman who asked Franklin the question: At the close of America’s Constitutional Convention in 1787, Benjamin Franklin was reportedly asked by George Washington’s friend, Mrs. Elizabeth …
The Papers of Benjamin Franklin: http://franklinpapers.org/franklin// — Sponsored by the American Philosophical Society and Yale University: Digital Edition by the Packard Humanities Institute. Clearly the best and most authoritative source on Benjamin Franklin’s writings anywhere.