Question: What ethnic group was the painter of the wife of the 36th President of the United States part of?

full_context: Document 1: Lyndon Baines Johnson Library and Museum: The Lyndon Baines Johnson Library and Museum, also known as the LBJ Presidential Library, is the presidential library and museum of Lyndon Baines Johnson, the 36th President of the United States (1963–1969). It is located on the grounds of the University of Texas at Austin, and is one of 13 Presidential Libraries administered by the National Archives and Records Administration. The LBJ Library houses 45 million pages of historical documents, including the papers of President Johnson and those of his close associates and others.
Document 2: Elizabeth Gowdy Baker: Elizabeth Gowdy Baker (1860-1927) was an American portrait painter. Born at Xenia, Ohio, she studied at the Cooper Union, Art Students' League, New York School of Art, Pennsylvania Academy of the Fine Arts in Philadelphia, Cowles Art School in Boston; under Frederick Freer, William Chase, and Harry Siddons Mowbray. She medaled at Cooper Union. She was a member of the Boston Art Students' Association and the Art Workers' Club for Women, New York. This artist painted numerous portraits and was especially successful with pictures of children. She had a method of her own, claiming that it was excellent for life-size portraits in watercolors. The paper she used was heavier than any made in the US at the time, and was imported. Her watercolors were very strong. She stated that in this method, she got "the strength of oils with the daintiness of water-colors, and that it is beautiful for women and children, and sufficiently strong for portraits of men". She rarely exhibited, and her portraits were kept in private houses.
Document 3: Esther Shemitz: Esther Shemitz (1900–1986), also known as "Esther Chambers" and "Mrs. Whittaker Chambers," was a 20th-Century American painter and illustrator who, as wife of ex-Soviet spy Whittaker Chambers, provided testimony that "helped substantiate" her husband's allegations during the Hiss Case.
Document 4: USS Lyndon B. Johnson: USS "Lyndon B. Johnson" (DDG-1002) will be the third and final "Zumwalt"-class destroyer built for the United States Navy. The contract to build her was awarded to Bath Iron Works located in Bath, Maine, on 15 September 2011. The award, along with funds for the construction of USS "Michael Monsoor" , was worth US$1.826 billion. On 16 April 2012, Secretary of the Navy Ray Mabus announced the ship would be named "Lyndon B. Johnson" in honor of Lyndon B. Johnson, who served as the 36th President of the United States from 1963 to 1969. Johnson served in the Navy during World War II, when he was awarded the Silver Star, and ultimately reached the U.S. Naval Reserve rank of commander. DDG-1002 is the 34th ship named by the Navy after a U.S. president.
Document 5: Electoral history of Lyndon B. Johnson: Electoral history of Lyndon B. Johnson, the 36th President of the United States (1963–1969), 37th Vice President of the United States (1961–1963); United States Senator (1949–1961) and United States Representative (1937–1949) from Texas.
Document 6: Lyndon B. Johnson: Lyndon Baines Johnson ( ; August 27, 1908January 22, 1973), often referred to as LBJ, was an American politician who served as the 36th President of the United States from 1963 to 1969, assuming the office after serving as the 37th Vice President of the United States from 1961 to 1963. A Democrat from Texas, he also served as a United States Representative and as the Majority Leader in the United States Senate. Johnson is one of only four people who have served in all four federal elected positions.
Document 7: Elizabeth Shoumatoff: Elizabeth Shoumatoff (Russian: Елизавета Николаевна Шуматова , "née" Avinoff) (October 6, 1888 – November 30, 1980) was a Russian-American painter who was best known for painting the Unfinished Portrait of Franklin D. Roosevelt. Other paintings included Lyndon B. Johnson and Lady Bird Johnson.
Document 8: Presidency of Lyndon B. Johnson: The presidency of Lyndon B. Johnson began on November 22, 1963, when Johnson became the 36th President of the United States upon the assassination of President John F. Kennedy, and ended on January 20, 1969. He had been Vice President of the United States for days when he succeeded to the presidency. A Democrat, he ran for and won a full four-year term in the 1964 election, winning by a landslide over Republican opponent Arizona Senator Barry Goldwater. Following the 1968 presidential election he was succeed by Republican Richard Nixon.
Document 9: Elena Gaussen: Elena Gaussen (previously known as Elena Gaussen-Marks) is a London-based portrait painter. She was divorced from screenwriter and cryptographer Leo Marks in 2000. Gaussen produces portraits and landscapes in a variety of media including pencil sketches. She painted a portrait of Helene Hanff during Hanff's 1971 visit to London, as documented in Hanff's 1973 book "The Duchess of Bloomsbury Street". Gaussen's "Portrait of the Artist" was included in the 1992 Annual Exhibition by the Royal Society of Portrait Painters. Gaussen illustrated a 1999 book release of Marks's famous poem "The Life That I Have".
Document 10: Eleanor and Franklin: Eleanor and Franklin is a 1976 American television miniseries starring Edward Herrmann as Franklin D. Roosevelt (FDR) and Jane Alexander as Eleanor Roosevelt which was broadcast on ABC on January 11 and 12, 1976. It is the first part in a two-part "biopic" miniseries (with a later sequel telecast the following year) based on Joseph P. Lash's biography and history from 1971 with the same title (and longer additional sub-title) based on their correspondence and recently opened archives. Joseph Lash was Eleanor's personal secretary and confidant (occasional alleged rumors also of an intimate relationship). He wrote several books on the Roosevelts including some on both Eleanor and Franklin individually and was also a controversial activist in his own right in leftist, liberal politics, social and labor issues of the era.
Document 11: Ruth Vollmer: Ruth Vollmer (1903 - 1982 New York City), was a German artist born in Munich. She was born in 1903 and named Ruth Landshoff. Her father, Ludwig Landshoff, was a musicologist and conductor and her mother, Phillipine Landshoff, was an opera singer. Their family was Jewish. At age 19 she began to work as an artist and took the advice of her father to draw every day. She also had many connections to the teachers and students at the Bauhaus. In 1930 she married a pediatrician named Hermann Vollmer, whom she met in Berlin. Ruth and Hermann move from Germany to New York in 1935. Ruth begins work designing window displays for Bonwit Teller, Tiffany's, Lord & Taylor, and other department stores. Her displays experimented with wire, steel, and copper mesh to create figural forms. In 1943, Vollmer becomes a U.S. citizen. In 1944 she receives a commission from the Museum of Modern Art for its fifteenth anniversary exhibition, "Art in Progress." Vollumer continues to work with wire mesh and shows her work "Composition in Space" at the Museum of Modern Art's 1948 exhibition "Elements of Stage Design." In 1950, she was commissioned to create a mural for the lobby of 575 Madison, where Vollmer created a large wall relief that used wire rods and wire mesh to play with light, texture, and transparency. Vollumer visits Giacometti for a second time during the summer of 1951. During the 1950s she begins to works with clay as well. Additionally, in 1954 she begins to teach at the Children's Art Center at the Fieldston School in Riverdale and continued to teach until the mid-sixties. In 1960, Vollmer participates in the NYU discussion series "Artists on Art" with her friend Robert Motherwell. 1960 is an important year because she also has her first one-person exhibition at Betty Parson's Section Eleven gallery space. Throughout the 1960s Vollmer works with bronze and as well as showing at Betty Parson's gallery several times. In 1963, she joins the group American Abstract Artists (AAA) and includes her work in their exhibitions from 1963 on. By 1970 Vollmer's art is working with complex geometrical forms and mathematical concepts, particularly spirals and platonic solids. Sol LeWitt wrote a short essay on Vollmer's work for "Studio International" titled "Ruth Vollmer: Mathematical Forms." Vollmer protests the cancellation of the Hans Haacke at The Solomon R. Guggenheim exhibition by writing a letter to the director, Thomas Messer, in 1971. In 1976, she had a large one-person exhibition at the Neuberger Museum of Art. In 1982, Ruth Vollmer dies after a long battle with Alzheimer's. A majority of her large personal art collection of over one hundred sculptures, paintings, and drawings is donated to MoMA. Her art collection included works by Carl Andre, Mel Bochner, Eva Hesse, Sol LeWitt, Ad Reinhardt, Frank Stella, Agnes Martin, and Chryssa.
Document 12: Daniel Greene (artist): Daniel E. Greene PSA, NA, AWS (born 1934) is an American artist who works in the media of pastels and oil painting. The Encyclopædia Britannica considers Mr. Greene the foremost pastelist in the United States. His paintings and pastels are in over 700 public and private collections in the United States and abroad. Highly regarded as a portrait artist, his subjects have included leaders of Government, Banking, Education and Industry. Some of his sitters include First Lady Eleanor Roosevelt, Ayn Rand, Astronaut Walter Schirra, William Randolph Hearst, “Wendy’s” founder Dave Thomas, Commentator Rush Limbaugh, Composer Alan Menken, Bryant Gumbel and Bob Schieffer of CBS TV. Governmental Portraits include Secretary of Agriculture Ann Veneman, Governor Paul Laxalt of Nevada, Governor Gerald Baliles of Virginia, Governor Benjamin Cayetano of Hawaii, and Governor Fob James of Alabama. Business sitters include the chairmen of the boards of Honeywell, Coca-Cola Company, Dupont Corporation, Endo Pharmaceuticals, American Express, The New York Stock Exchange and IBM. Mr. Greene has also painted the Deans, Presidents and Benefactors of Tufts, Duke, Columbia, North Carolina, West Point, Delaware, Penn State, New York, Princeton, Rutgers, Yale and Harvard Universities.
Document 13: Lady Bird Johnson: Claudia Alta "Lady Bird" Johnson (née Taylor; December 22, 1912 – July 11, 2007) was First Lady of the United States (1963–69), as the wife of the 36th President of the United States, Lyndon B. Johnson.
Document 14: Selma Burke: Selma Hortense Burke (December 31, 1900 – August 29, 1995) was an American sculptor and a member of the Harlem Renaissance movement. Burke is best known for her bas relief of President Franklin D. Roosevelt on the Recorder of Deeds Building in Washington, D.C. Her other work includes a bust of Duke Ellington, portraits of Mary McLeod Bethune and Booker T. Washington, and sculptures of John Brown (abolitionist) and President Calvin Coolidge.
Document 15: Nancy Reagan: Nancy Davis Reagan (born Anne Frances Robbins; July 6, 1921 – March 6, 2016) was an American film actress and the wife of Ronald Reagan, the 40th President of the United States. She served as the First Lady of the United States from 1981 to 1989.
ground_truth: Russian-American