There is no definitive list of documents that contain infallible teaching.
However, while still Prefect of the Holy Inquisition, then-Cardinal Ratzinger (now Pope Benedict) did release a partial list of various papal documents dating back for a very, very long time which he said fell under the papal infallibility rule prior to its formal definition at Vatican I.
Unfortunately, I have no idea where I would find that document. And I’m not even 100% sure I have all the details right.
So, practical answer: trust your Catechism, and, if you aren’t satisfied with its answers, consult its footnotes and pull out the documents it cites. It’s not infallible, but it is a sure norm.