I find the part on not recognizing the Conquistadors as people fascinating. You are a well-read person looking for truth and I really appreciate that even though I do not share your belief in ET origins of UFOs. For 1952 case I heartily recommend you read Robert Sheaffer's account https://en.wikipedia.org/wiki/Robert_Sheaffer ALSO: https://www.amazon.com/Bad-UFOs-Critical-Thinking-Claims-ebook/dp/B01AO9VZFU/ref=sr_1_1