Whitney Ellsworth was born in Brooklyn, New York in 1908. He had a correspondence course in graphics and became A. D. Carter's assistant on the 'Just Kids' comic. From the late 1920s, he worked at the graphics studio of King Features Syndicate, where he cooperated on such titles as 'Dumb Dora' (originally created by Chic Young) and 'Tillie the Toiler' (created by Russ Westover). He was also active as an illustrator for several New Jersey dailies.
In 1934 Ellsworth started a cooperation with publisher Major Nicholson, where he created the first comic series of his own, 'Little Linda' in New Fun Comics. He became chief editor at Nicholson two years later, an occopation he held at DC later on. At DC, he was in charge of such titles as 'Superman', 'Batman', 'The Spectre', 'The Green Arrow' and 'Dr Fate'. He also wrote several scenarios for the 'Superman' daily comic. Between 1953 and 1957, Ellsworth was responsible for the 'Superman' television serial. Ellsworth retired from his editorial activities in 1970.