Question: Based on a screenplay by Maurice Harry Rapf, what Disney film follows 7 year old johnny on his visit to his grandmothers plantation?

Context paragraphs:
Burn 'Em Up O'Connor: Burn 'Em Up O'Connor is a 1939 race car film directed by Edward Sedgwick and starring Dennis O'Keefe, Cecilia Parker, Nat Pendleton and Harry Carey.  The screenplay was written by Milton Merlin and Byron Morgan from the novel "Salute to the Gods" by racing driver and journalist Malcolm Campbell.  The cinematographer was Lester White and the picture was produced by an uncredited Harry Rapf.  The supporting cast features Charley Grapewin, Alan Curtis and Tom Neal, with a brief appearance by Clayton Moore.

Song of the South: Song of the South is a 1946 American live-action animated musical film produced by Walt Disney and released by RKO Radio Pictures.  It is based on the collection of Uncle Remus stories as adapted by Joel Chandler Harris, and stars James Baskett as Uncle Remus.  The film takes place in the southern United States during the Reconstruction Era, a period of American history shortly after the end of the American Civil War and the abolition of slavery.  The story follows 7-year-old Johnny (Bobby Driscoll) who is visiting his grandmother's plantation for an extended stay.  Johnny befriends Uncle Remus, one of the workers on the plantation, and takes joy in hearing his tales about the adventures of Br'er Rabbit, Br'er Fox, and Br'er Bear.  Johnny learns from the stories how to cope with the challenges he is experiencing living on the plantation.

Whipsaw (film): Whipsaw is a 1935 American crime drama film directed by Sam Wood and starring Myrna Loy and Spencer Tracy.  Written by Howard Emmett Rogers, based on a story by James Edward Grant, the film is about a government agent working undercover traveling across the country with an unsuspecting woman, hoping she will lead him to her gang of jewel thieves.  The film was produced by Harry Rapf for Metro-Goldwyn-Mayer, and was released on December 18, 1935, in the United States.

Tokyo Kodomo Club: Tokyo Kodomo Club (東京こどもクラブ , Tōkyō Kodomo Kurabu ) , meaning Tokyo Children Club, is an early childhood education program published in Japan in an audio-visual format, distributed monthly on a record.  The 7-inch record contained stories and songs, accompanied by a picture book that could be bound in a special folder.  The early-childhood education program came in two courses: a 2-4 year old course and a 5-7 year old course.  Each of the courses was designed to complete in 12 months.  In addition on a quarterly basis, the Club sent out supplemental stories, songs and other music on a 12-inch record.  The recitations on Side A were by "Uncle Maeda" (前田武彦 , Takehiko Maeda ) , and on Side B, "Bin-chan" (楠トシエ , Toshie Kusunoki ) .  The records were monaural recordings at 33-1/3 rpm.  Presently, the recordings have gone out of print, making their procurement quite difficult.

Broadway to Hollywood (film): Broadway to Hollywood is a 1933 American Pre-Code musical film directed by Willard Mack, produced by Harry Rapf, cinematography by Norbert Brodine and released by Metro-Goldwyn-Mayer.  The film features many of MGM's stars of the time, including Frank Morgan, Alice Brady, May Robson, Madge Evans, Jimmy Durante, Mickey Rooney, and Jackie Cooper.  Brothers Moe Howard and Curly Howard of The Three Stooges appear—without Ted Healy and without Larry Fine—almost unrecognizably, as Otto and Fritz, two clowns in makeup.

Why Girls Leave Home (1921 film): Why Girls Leave Home is a lost 1921 American silent drama film produced by Harry Rapf for Warner Bros. It was the only film from the studio to make a profit in 1921.  The poster for the film was featured in the 1962 film "Gypsy".

Jim Buick: James J. Buick (born December 14, 1940) is a former American racing driver from Omaha, Nebraska who competed in the CART series in 1981.  He started four races in 1981 with a best finish of 16th and failed to qualify for the Indianapolis 500 in a 7 year old Chevrolet–powered Eagle.  Buick again attempted but failed to make the Indy 500 in 1983 in a Chevrolet-powered 3 year old Penske chassis.  With the formation of the Indy Racing League in 1996, the then 55-year-old Buick attempted to qualify for the series' first race at Walt Disney World Speedway in a 1992 Lola, but was unable to qualify.  He still earned $10,000 for his entry.

Adventures of Gallant Bess: Adventures of Gallant Bess is a 1948 American contemporary Western film directed by Lew Landers and filmed in Cinecolor.  It has no relation to producer Matthew Rapf's father Harry Rapf's film "Gallant Bess".

Maurice Rapf: Maurice Harry Rapf (May 19, 1914 – April 15, 2003) was an American screenwriter and professor of film studies.  His work includes the screenplays for early Disney live-action features "Song of the South" and "So Dear to My Heart", uncredited work on the screenplay for the animated feature "Cinderella", and several films of the late 1930s.  He was a co-founder of the Screen Writers Guild.  He was blacklisted in 1947 due to his association with the Communist Party USA.  He later taught film studies at Dartmouth College.

Harry Rapf: Harry Rapf (16 October 1882 New York City – 6 February 1949 Los Angeles) American film producer.  He began his career in 1917, and during a 20-year career became a well-known producer of films for Metro-Goldwyn-Mayer.  He created the comedic duo "Dane & Arthur" featuring Karl Dane and George K. Arthur in the late 1920s.

Supporting paragraphs: Maurice Rapf Song of the South
Answer: Song of the South