The Brazilian Story of the Lead Masks

This is the 1960s Brazilian story of the lead masks. Mysterious objects, cryptic notes, even possible police coverups and aliens. Today's sources are in all that's interesting by Killeen Fraga, an episode transcript of the skeptic podcast by Brian Dunning, and two flying saucer review articles,. One from 1967 by Charles Bowen and another from 1971 by Gordon Creighton or show notes.