May as well have used the old post. Anyway.
http://web.archive.org/web/20081015141717/http://www.imperial-library.info/fsg/brendanarticle1.shtml Because I'm not reading it. It's a compendium of all of the older knowledge regarding Argonians up until at least Morrowind. A treasure trove of Argonian lore. And I wouldn't say that the Argonians have had much of an update since then, outside of the two lore novels, http://www.imperial-library.info/content/infernal-city-lore-notes and http://www.imperial-library.info/content/lord-souls-lore-notes, which are treasure troves as well.