DC Database

"DC: The New Frontier" was a six-issue limited series published between 2003 and 2004, both written and illustrated by creator Darwyn Cooke. It was collected in two trade paperback volumes and had a special released in 2008. There was also an animated movie based on the work, "Justice League: The New Frontier." In 2015, a deluxe edition was released that included all six issues, sketches and notes by Cooke, and the special.

The series was influenced by works such as Kingdom Come, The Golden Age, Watchmen, and Batman: The Dark Knight Returns. Much like The Golden Age, New Frontier takes place primarily in the 1950s, and depicts the Golden Age superheroes Superman, Batman, and Wonder Woman meeting Silver Age characters the Flash, Green Lantern, and Martian Manhunter. The story bridges the gap between the end of the Golden Age to the beginning of the Silver Age in the DC Universe.

The Essential Wonder Woman Encyclopedia (2010) identifies this as Earth-260 pre-Crisis and Earth-21 post-Crisis.