Question: What nationality is the author of who is best known for his children's book series that was first published in 1963 and helped establish Scholastic as a premier publishing company?

full_context: Document 1: Big Red (film): Big Red is a 1962 American family-oriented adventure film from Walt Disney Productions. Based on a 1945 novel by American author Jim Kjelgaard and adapted to the screen by American screenwriter Louis Pelletier, the film starred Walter Pidgeon.
Document 2: Beverly Cleary: Beverly Atlee Cleary (née Bunn; born April 12, 1916) is an American writer of children's and young adult fiction. One of America's most successful living authors, 91 million copies of her books have been sold worldwide since her first book was published in 1950. Some of Cleary's best known characters are Henry Huggins and his dog Ribsy, Ramona Quimby and Beezus Quimby, and Ralph S. Mouse.
Document 3: Geronimo Stilton: Geronimo Stilton is an Italian children's book series published by Edizioni Piemme of Milan, Italy, since 2000. Scholastic Corporation has published the English version of the series since February 2004. Although the series credits its title character as the author, the idea was originally thought of by Elisabetta Dami. On older novels, the copyright is issued to a pseudonym "Geronimo Stilton"; this was changed on newer books. The books are intended for readers in the 6–12-year-old age range.
Document 4: Scholastic Corporation: Scholastic Corporation is an American multinational publishing, education and media company known for publishing, selling, and distributing books and educational materials for schools, teachers, parents, and children. Products are distributed to schools and districts, to consumers through the schools via reading clubs and fairs, and through retail stores and online sales. The business has three segments: Children Book Publishing & Distribution (Trade, Book Clubs and Book Fairs), Education, and International. Scholastic holds the perpetual U.S. publishing rights to "Harry Potter" and "The Hunger Games" book series. Scholastic is the world's largest publisher and distributor of children's books and a leader in print and digital educational materials for pre-K to grade 12.
Document 5: Norman Bridwell: Norman Ray Bridwell (February 15, 1928 – December 12, 2014) was an American author and cartoonist best known for the "Clifford the Big Red Dog" series of children's books.
Document 6: Raymond Briggs: Raymond Redvers Briggs, CBE (born 18 January 1934) is an English illustrator, cartoonist, graphic novelist and author who has achieved critical and popular success among adults and children. He is best known in Britain for his story "The Snowman", a book without words whose cartoon adaptation is televised and whose musical adaptation is staged every Christmas.
Document 7: Norman Warne: Norman Dalziel Warne (1868 – 25 August 1905) was the third son of publisher Frederick Warne, and joined his father's firm Frederick Warne & Co as an editor. In 1900, the company rejected Beatrix Potter's "The Tale of Peter Rabbit", but eventually reconsidered and in October 1902, published the book to great success. Norman Warne became Potter's editor and they worked together on several subsequent books and spinoffs such as soft toys and "The Game of Peter Rabbit".
Document 8: Norma Klein: Norma Klein (May 13, 1938 – April 25, 1989) was a US children's book author. She was born, grew up and lived in New York City for most of her life. She died, after a brief illness, in New York City on April 25, 1989 at the age of 50.
Document 9: Reader Rabbit: Reader Rabbit is an edutainment software franchise created in 1983 by The Learning Company. This series is aimed at players aged from infancy through second grade. To cater to older players who had outgrown "Reader Rabbit", 1998 saw the release of the first title in a new spin-off series entitled "The ClueFinders", for third grade through sixth grade.
Document 10: Touchdown (mascot): Touchdown, or the "Big Red Bear", is the unofficial mascot of Cornell University. The first mascot was a black bear introduced in 1915 by the Cornell University Athletic Association. Three more live bears over the course of approximately two decades also made appearances at Cornell until the live bear was replaced by costumed students some years later. Touchdown appears on the logo for Cornell Athletics.
Document 11: Norman Rockwell: Norman Perceval Rockwell (February 3, 1894 – November 8, 1978) was a 20th-century American author, painter and illustrator. His works enjoy a broad popular appeal in the United States for its reflection of American culture. Rockwell is most famous for the cover illustrations of everyday life he created for "The Saturday Evening Post" magazine over nearly five decades. Among the best-known of Rockwell's works are the "Willie Gillis" series, "Rosie the Riveter", "The Problem We All Live With", "Saying Grace", and the "Four Freedoms" series. He also is noted for his 64-year relationship with the Boy Scouts of America (BSA), during which he produced covers for their publication "Boys' Life", calendars, and other illustrations. These works include popular images that reflect the "Scout Oath" and "Scout Law" such as "The Scoutmaster", "A Scout is Reverent" and "A Guiding Hand", among many others.
Document 12: Clifford the Big Red Dog: Clifford the Big Red Dog is an eponymously titled American children's book series about a giant red dog named Clifford. It was first published in 1963 and was written by Norman Bridwell (1928–2014). The series helped establish Scholastic as a premier publishing company, and Clifford himself is Scholastic's official mascot.
Document 13: Norbert (dog): Norbert is a fluffy, 7" tall mixed breed registered therapy dog, best known for his Norbert picture book series, and his popularity on social media. Norbert's breed is unknown, but is suspected to be a cross between 3 dog breeds, chihuahua, cairn terrier & lhasa apso. Norbert's time, money and book revenue is given to various charitable causes throughout the United States.
Document 14: Norman Z. McLeod: Norman Zenos McLeod (September 20, 1898 – January 27, 1964) was an American film director, cartoonist, and writer.
Document 15: 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.
ground_truth: American