With speed to match his style, he became a favorite of editor-in-chief Stan Lee, who assigned Maneely covers and stories throughout virtually the entire range of Atlas comics. With superheroes experiencing a lull in popularity, Maneely drew Westerns, war, horror, humor, romance, science fiction, spy, crime, and even period-adventure stories — that last most notably with the medieval series "Black Knight", co-created by Maneely and writer and editor-in-chief Lee, and first reprinted in 1960s Marvel Comics at the behest of editor Roy Thomas, who as a teen had "devoured the "Black Knight" comic, and became an immediate fan."