Except...
There does NOT exist a single information source which is absolutely 100% accurate and reliable (with the exception of "holy scriptures" such as the Holy Bible, the Quran, usw, ASSUMING one is a believer in the applicable faith...!).
Once we remove the intentionally-inaccurate sources (Fox News as well as much coverage of local items in local publications...) and the unintentionally-inaccurate sources (too numerous to mention...) you are left with, essentially, zero or less!
For example, we collectors of shellacoid objects tend to assume that Sir Brian Rust provides infallible data in his plethora of works...however, virtually every owner of one of his works has made extensive hand-added corrections.
In fact, one can't even rely totally on what one sees (or, more accurately, THINKS one sees...was one wearing the right eyeglasses? Had one ingested hallucinogenic substances? Or...).
Steven C. Barr