40s
- Mantell UFO incident
- Chiles-Whitted UFO encounter
- White Sands, McLaughlin, 1945
50s
- sawbill bay 1950
- Lubbock Lights
- Oloron 1952
- Orfeo Angelucci
- north korea 30 january 1952 ufo
- Oskar Linke, Germany, 1952
- Truman Bethurum
- George Hunt Williamson
- George Adamski
- Cedric Allingham
- salvador villanueva medina, 1953 Mexico
- Al Bender 1953 Connecticut
- 1954 Rouen
- 1954, 8 March, Monza Italy
- goose bay canada 1954
- Kelly–Hopkinsville encounter
- thomas hutchinson 1956 ireland
- joão de freitas guimarães 1957 july
- Antônio Vilas Boas
- UFO_sightings_in_Brazil#1957 november
- stig rydberg hans gustavsson 1958 december sweden
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- new-zealand 1959 blenheim
- gideon johanson 1959 sweden
- czechoslovakia ufo 1959