9 February 1950 (Los Angeles Times, California)
Source: Project Blue Book (Fold3.com)
Quote from the article:
“Six observers, including Lt. Comdr. J. L. Kraker of
the Alameda Naval Air Station, reported seeing a giant object passing over the
station yesterday. The report was passed along to the western air defense zone
intelligence office at Hamilton Field, which made it public today.”
Naval Air Station Alameda, California, about
1946-1947
(wikimedia.org photo)