Question: Who was the employer of the cartoonist who drew "Little Nemo"?

full_context: Document 1: Little Nemo: Adventures in Slumberland: Little Nemo: Adventures in Slumberland, released in Japan as simply Nemo (ニモ , Nimo ) , is a 1989 Japanese/American animated adventure fantasy film directed by Masami Hata and William Hurtz. Based on the comic strip "Little Nemo in Slumberland" by Winsor McCay, the film went through a lengthy development process with a number of screenwriters. Ultimately, the screenplay was credited to Chris Columbus and Richard Outten; the storyline and art style differed from the original version. The original soundtrack was penned by the Academy Award-winning Sherman Brothers. It was a box office bomb.
Document 2: Little Nemo: Little Nemo is a fictional character created by American cartoonist Winsor McCay.
Document 3: Creation (unfinished film): Creation is an unfinished feature film, and a project of stop motion animator Willis O'Brien. It was about modern men encountering dinosaurs and other prehistoric animals on an island. The picture was scrapped by RKO studio head David O. Selznick on the grounds of expense, and Merian C. Cooper, the studio producer who recommended the film's cancellation, considered the storyline to be boring, due to lack of action. The completed footage ran twenty minutes in length, although approximately four minutes of footage is all that survives today. Cooper later used some of the miniatures and dinosaur armatures and O'Brien's stop-motion animation techniques for "King Kong".
Document 4: Little Nemo (1911 film): Little Nemo, also known as Winsor McCay: The Famous Cartoonist of the N.Y. Herald and His Moving Comics, is a 1911 silent animated short film by American cartoonist Winsor McCay. One of the earliest animated films, it was McCay's first, and featured characters from McCay's comic strip "Little Nemo in Slumberland". Its expressive character animation distinguished the film from the experiments of earlier animators.
Document 5: Gertie the Dinosaur: Gertie the Dinosaur is a 1914 animated short film by American cartoonist and animator Winsor McCay. It is the earliest animated film to feature a dinosaur. McCay first used the film before live audiences as an interactive part of his vaudeville act; the frisky, childlike Gertie did tricks at the command of her master. McCay's employer William Randolph Hearst later curtailed McCay's vaudeville activities, so McCay added a live-action introductory sequence to the film for its theatrical release. McCay abandoned a sequel, "Gertie on Tour" (  1921 ), after producing about a minute of footage.
Document 6: George Herriman: George Joseph Herriman (August 22, 1880 – April 25, 1944) was an American cartoonist best known for the comic strip "Krazy Kat" (1913–1944). More influential than popular, "Krazy Kat" had an appreciative audience among those in the arts. Gilbert Seldes' article "The Krazy Kat Who Walks by Himself" was the earliest example of a critic from the high arts giving serious attention to a comic strip. "The Comics Journal" placed the strip first on its list of the greatest comics of the 20th century. Herriman's work has been a primary influence on cartoonists such as Will Eisner, Charles M. Schulz, Robert Crumb, Art Spiegelman, Bill Watterson, and Chris Ware.
Document 7: List of films featuring giant monsters: This is an alphabetical list of films featuring giant monsters, known in Japan as kaiju. One of the first films involving giant monsters was the 1933 classic "King Kong", as developments in cinema and animation enabled the creation of realistic giant creatures. The film influenced many giant-monster films in its wake, including many produced in Japan, starting with the adaptation "King Kong Appears in Edo" in 1938, which is now presumed to be a lost film. The visual effects in "King Kong", created by Willis O'Brien, inspired future monster film effects artists such as Ray Harryhausen and Dennis Muren. Early giant-monster films often had themes of adventure and exploration of unknown regions, and incorporated fights with giant monsters as a climactic element.
Document 8: Dinosaur (film): Dinosaur is a 2000 American CGI animated adventure film produced by Walt Disney Feature Animation and The Secret Lab and released by Walt Disney Pictures. It is the 39th Disney animated feature film and Disney's The Secret Lab computer animated feature, though it is not officially labeled as one of the animated classics in the United Kingdom, where "The Wild" (2006) is included in the canon instead.
Document 9: Dr. Seuss: Theodor Seuss Geisel ( ; March 2, 1904 – September 24, 1991) was an American author, political cartoonist, poet, animator, book publisher, and artist, best known for authoring children's books under the pen name Dr. Seuss ( ). His work includes several of the most popular children's books of all time, selling over 600 million copies and being translated into more than 20 languages by the time of his death.
Document 10: Little Sammy Sneeze: Little Sammy Sneeze was a comic strip by American cartoonist Winsor McCay. In each episode the titular Sammy sneezed himself into an awkward or disastrous predicament. The strip ran from July 24, 1904, until December 9, 1906, in the "New York Herald", where McCay was on the staff. It was McCay's first successful comic strip; he followed it with "Dream of the Rarebit Fiend" later in 1904, and his best-known strip "Little Nemo in Slumberland" in 1905.
Document 11: Fritz the Cat: Fritz the Cat is a comic strip created by Robert Crumb. Set in a "supercity" of anthropomorphic animals, the strip focuses on Fritz, a feline con artist who frequently goes on wild adventures that sometimes involve sexual escapades. Crumb began drawing this character in homemade comic books when he was a child. Fritz became one of his most famous characters, thanks largely to the motion picture adaptation by Ralph Bakshi.
Document 12: Plane Crazy: Plane Crazy is an American animated short film directed by Walt Disney and Ub Iwerks. The cartoon, released in 1929 by the Walt Disney Studios, was the first creation of the character Mickey Mouse. It was made as a silent film and given a test screening to a theater audience on May 15, 1928, but failed to pick up a distributor. Later that year, Disney released Mickey's first sound cartoon, "Steamboat Willie", which was an enormous success. Following this, "Plane Crazy" was released as a sound cartoon on March 17, 1929. It was the fourth Mickey film to be released after "Steamboat Willie", "The Gallopin' Gaucho", and "The Barn Dance" (1928).
Document 13: Geri's Game: Geri's Game is a 1997 computer animated short film made by Pixar, written and directed by Jan Pinkava. Although Pixar had started out with a successful string of shorts in the 1980s, these were put on hold for most of the 1990s to focus on for-hire work, and development of the feature films "Toy Story" and "A Bug's Life"; "Geri's Game" was the first Pixar short since the 1989 short "Knick Knack". The film won an Academy Award for Best Animated Short Film in 1998.
Document 14: Winsor McCay: Zenas Winsor McCay (  1867–71 or September 26, 1869 – July 26, 1934) was an American cartoonist and animator. He is best known for the comic strip "Little Nemo" (1905–14; 1924–26) and the animated film "Gertie the Dinosaur" (1914). For contractual reasons, he worked under the pen name Silas on the comic strip "Dream of the Rarebit Fiend".
Document 15: Al Capp: Alfred Gerald Caplin (September 28, 1909 – November 5, 1979), better known as Al Capp, was an American cartoonist and humorist best known for the satirical comic strip "Li'l Abner", which he created in 1934 and continued writing and (with help from assistants) drawing until 1977. He also wrote the comic strips "Abbie an' Slats" (in the years 1937–45) and "Long Sam" (1954). He won the National Cartoonists Society's Reuben Award in 1947 for Cartoonist of the Year, and their 1979 Elzie Segar Award, posthumously for his "unique and outstanding contribution to the profession of cartooning." Comic strips dealt with northern urban experiences until the year Capp introduced "Li'l Abner," the first strip based in the South. Although Capp was from Connecticut, he spent 43 years teaching the world about Dogpatch, reaching an estimated 60 million readers in over 900 American newspapers and 100 foreign papers in 28 countries. M. Thomas Inge says Capp made a large personal fortune on the strip and "had a profound influence on the way the world viewed the American South."
ground_truth: William Randolph Hearst