Lucienne Bloch (January 5, 1909 – March 13, 1999) was a Switzerland-born American artist. She was best known for her murals and for her association with the Mexican artist Diego Rivera, for whom she produced the only existing photographs of Rivera's mural Man at the Crossroads, painted in 1933 and destroyed in January 1934 at Rockefeller Center in New York City. Career Background Bloch was born in Geneva, Switzerland, the youngest child of composer and photographer Ernest Bloch. In 1917, the Bloch family emigrated to America. A multi-talented artist, Lucienne attended the École nationale supérieure des Beaux-Arts in Paris at 14, apprenticing with sculptor Antoine Bourdelle and painter Andre Lhote. Her close friend Beniamino Bufano also influenced her sculpture. With Diego Rivera and Frida Kahlo In 1929, she pioneered the design of glass sculpture for the Royal Leerdam Crystal Glass Factory in the Netherlands. When Frank Lloyd Wright saw her glass works and spoke with her in New York, he invited her to teach at his architectural school, Taliesin East, where she worked with artist and muralist Santiago Martínez Delgado and other Taliesin fellows. Then, in 1931, Bloch had met and began her apprenticeship with Diego Rivera on his frescoes in New York (1931, 1933) and Detroit (1932). She also formed a close friendship with Rivera's wife Frida Kahlo, and they became each other's companion and confidant. In 1932 she accompanied Kahlo to Mexico when Kahlo's mother became ill. She was also with Kahlo in Detroit when Kahlo had her miscarriage. A prolific photographer, Bloch contributed many photographs of Rivera and Kahlo to biographical works about them. She took the only existing photographs of Rivera's (controversially) destroyed mural, Man at the Crossroads, in Rockefeller Center Plaza in New York City. She created five portfolios of photographs of Rivera and Kahlo, including photos of Kahlo's paintings in progress, and the artists in New York City, Detroit, and Mexico. The apprentices there were: Bloch, Stephen Pope Dimitroff, Lou Block, Arthur Niendorf, Seymour Fogel, Hideo Noda, and Antonio Sanchez Flores. With Stephen Pope Dimitroff On September 5, 1936, Lucienne married Stephen Pope Dimitroff, one of Rivera's chief plasterers. Together they created fresco murals all over the United States. From 1935 to 1939, Bloch was employed by the WPA/FAP (Works Progress Administration/Federal Arts Project). As a WPA/FAP artist, she completed murals for public buildings, including the House of Detention for Women in New York