How long has people known about the Bermuda triangle?

The first known use of the term "Bermuda Triangle" or "Devil's Triangle" was in a magazine article in a 1964 article that was published in 'Argosy' by Vincent Gaddis called 'The Deadly Bermuda Triangle'. Then in 1974, two books were published, 'The Bermuda Triangle' by Charles Berlits and 'The Devil's Triangle' by Richard Winer. These publications were based on speculation, not science.