Question: Bertha Hill and "Satchmo" were best known for doing what together?

Context articles: Louis Armstrong
Wesley Harrington Ketchum
Bertha Egnos
Bertha Runkle
Bertha Raffetto
Palmer Ranch
B. M. Bower
Harry Gray (business)
Bertha Hill
Jimmy Castor

Louis Daniel Armstrong (August 4, 1901– July 6, 1971), nicknamed Satchmo, Satch or Pops, was an American trumpeter, composer, singer and occasional actor who was one of the most influential figures in jazz.
 His career spanned five decades, from the 1920s to the 1960s, and different eras in the history of jazz.
Wesley Harrington Ketchum was a physician who is best known for his work with Edgar Cayce, the clairvoyant diagnostician, in the early 1900s.
 Ketchum was medical born in Lisbon, Ohio on November 11, 1878 to Saunders C. Ketchum and Bertha Bennett, and was the oldest of 7 children.
 He graduated from the Cleveland College of Homeopathic Medicine in 1904, and took up the practice of medicine in Hopkinsville Kentucky.
 He practiced medicine in Hopkinsville until 1912.
 In 1913 he traveled across country to San Francisco, and took passage to Honolulu, Hawaii, where he opened a new practice.
 He returned to California in 1918, and established an office in Palo Alto California, practicing medicine there until the 1950s.
 He retired to Southern California around 1963, settling in San Marino, just outside Pasadena.
 He died on November 28, 1968 in Canoga Park, California.
Bertha Egnos (1 January 1913 – 2 July 2003) was a South African musician, director, and composer in musical theatre, best known as the co-creator and director of "Ipi Tombi".
Bertha Runkle (1879–1958) was an American novelist and playwright born in Berkeley Heights, New Jersey.
 From a literary family, she wrote five novels.
 Her first and best known, "The Helmet of Navarre", was made into a Broadway play.
Bertha Raffetto (March 15, 1885 – September 6, 1952) is best known for her song, "Home Means Nevada", which is the official state song for Nevada.
Palmer Ranch is a massive real estate development in Sarasota County, Florida between the cities of Sarasota and Osprey.
 Located very roughly by Clark Road, Tamiami Trail and Interstate 75, it was part of the original 80,000 acres (320 km²) of Florida land purchased by Bertha Honoré Palmer, wife of Chicago department store tycoon Potter Palmer, best known for the famed Palmer House hotel in Chicago.
 It is one of many former Florida cattle ranches developed into planned communities; the other most notable ranch conversion in the Sarasota Bradenton area is Lakewood Ranch.
Bertha Muzzy Sinclair or Sinclair-Cowan, "née" Muzzy (November 15, 1871 – July 23, 1940), best known by her pseudonym B. M. Bower, was an American author who wrote novels, fictional short stories, and screenplays about the American Old West.
 Her works, featuring cowboys and cows of the Flying U Ranch in Montana, reflected "an interest in ranch life, the use of working cowboys as main characters (even in romantic plots), the occasional appearance of eastern types for the sake of contrast, a sense of western geography as simultaneously harsh and grand, and a good deal of factual attention to such matters as cattle branding and bronc busting."
 She was married three times: to Clayton Bower in 1890, to Bertrand William Sinclair (also a Western author) in 1905, and to Robert Elsworth Cowan in 1921.
 However, she chose to publish under the name Bower.
Harry Jack Gray (November 18, 1919 – July 8, 2009) was an American business manager and philanthropist, best known as CEO and chairman of United Technologies.
 He was born Harry Jack Grusin in Milledgeville Crossroads, Georgia.
 His mother, Bertha Grusin, died of cancer when he was six years old.
 He went to live with his older sister, Gussie, in Chicago, Illinois.
 His father's business failed when he was eight, and he financed his college education at the University of Illinois with multiple jobs that included washing dishes, waiting tables, and stoking a boarding-house furnace.
Bertha "Chippie" Hill (March 15, 1905 – May 7, 1950), was an American blues and vaudeville singer and dancer, best known for her recordings with Louis Armstrong.
James Walter Castor (January 23, 1940 – January 16, 2012) was an American funk, R&B, and soul musician.
 A multi-instrumentalist, he is credited with vocals, saxophone and composition.
 He is best known for songs such as "It's Just Begun", "Bertha Butt Boogie", and the biggest hit single, million-seller"Troglodyte (Cave Man)".