Nick Mariana UFO Footage - Great Falls, Montana - 1950 - Footage Only
Filmed at approximately 11:30 AM, August 15th, 1950 in Great Falls, Montana by Nicolas Mariana.
This copy was was taken from the 1956 film "U.F.O." and is the cleanest copy of the footage I have yet found. If you have access to a better copy, please upload it.
Please note that YouTube's processing is introducing compression artifacts that appear in the lower right of the screen and appear as white clouds for the first second or so. These are not in the uploaded source file.