Marie van Goethem
Between 1878 and 1881, Degas drew, painted and sculpted Marie in artworks including "Dancer with Fan", "Dancing Lesson", "Dancer Resting", numerous preparatory sketches, and most famously in "Little Dancer of Fourteen Years". He frequently attended ballet performances at the Paris Opera and often observed classes at the dance school. By posing for Degas, Marie likely earned five to six francs per four-hour sitting.
Cubism
Cubism burgeoned between 1907 and 1911. Pablo Picasso's 1907 painting "Les Demoiselles d'Avignon" has often been considered a proto-Cubist work. Georges Braque's 1908 "Houses at L’Estaque" (and related works) prompted the critic Louis Vauxcelles, in "Gil Blas", 25 March 1909, to refer to "bizarreries cubiques" (cubic oddities). Gertrude Stein referred to landscapes made by Picasso in 1909, such as "Reservoir at Horta de Ebro", as the first Cubist paintings. The first organized group exhibition by Cubists took place at the Salon des Indépendants in Paris during the spring of 1911 in a room called 'Salle 41'; it included works by Jean Metzinger, Albert Gleizes, Fernand Léger, Robert Delaunay and Henri Le Fauconnier, yet no works by Picasso or Braque were exhibited.