Explanation Video: https://youtu.be/kFzPtHvsCVQ
Sources/Extra Info for the more obscure entries:
Alien killed by Coal Shovel: https://www.thenorthernecho.co.uk/opinion/leader/9104870.alien-killed-coal-shovel/
Jutland Robots: https://www.thinkaboutitdocs.com/1940-ufo-alien-sightings/
Flagstaff Incident: https://pdfcoffee.com/humanoid-encounters-1930-1949-by-albert-s-rosales-promo-pdf-free.html
Aliens are Jesus Followers too: https://cufos.org/PDFs/HUMCAT/HUMCAT_Index_1940-1949.pdf
Alien Nazi Prisoner: https://www.alienhub.com/threads/ufonauts-the-lost-misplaced-and-confiscated-evidence.47610/page-2
by ConspiraSam13