I believe it was published in 1954.

In the films the two towers are Orthanc (Saruman - Isengard) and Barad-dur (Sauron - Mordor).

The three titles are "The Fellowship of the Ring," "The Two Towers," and "The Return of the King."

The Two Towers, Books 3 and 4 (It was actually a sixtology).

The trilogy based on the novel by J.R.R. Tolkien is "The Lord of the Rings." The three movies in the series are "The Fellowship of the Ring," "The Two Towers," and "The Return of the King."