This is a Lord of the Rings First U.S. Edition Trilogy.  The Lord of the Rings is the first printing and it is a rare and valuable undated copy with no price on the dust jacket.  The Two Towers and The Return of the King are both the seventh printings.  The first printing includes the fold out black and red map and the photo of Tolkien on the back of the dust jacket cut-off in a straight line.  Only 3,000 of these books were printed.  Half had the 1954 date and First Edition on the copyright page and half had no date or attribute on the copyright page and no price on the dust jacket because they were printed for possible export.