Original Columbia Pictures Three Sheet Poster (41×81) for the Frank McDonald sci-fi adventure, THE UNDERWATER CITY (1962)—starring William Lundigan, Julie Adams, and Roy Roberts. In one of the last sci-fi adventure relics from the 50s and early 60s, various people take part in an experiment to see if people can live for extended periods of time in a city built under the ocean. This original unused three sheet poster in two separate panels is in very fine condition.