In "The World's Greatest Superheroes" newspaper comic strip, a 1978 Sunday strip shows a map of the east coast of the United States; the map places Metropolis in Delaware and Gotham City across Delaware Bay in New Jersey, with the Metro-Narrows Bridge linking the two cities. A similar map appeared in "The New Adventures of Superboy" #22 (October 1981), with Smallville shown within driving distance of both cities (in post-Crisis comics, Smallville was officially relocated to Kansas). 1990's "The Atlas of the DC Universe" also places Metropolis in Delaware and Gotham City in New Jersey.