Jean Émile LABOUREUR (1877 - 1943) Amphithéâtre Richelieu, public lecture at the Sorbonne, circa 1898 Graphite and pen. Annotated "amph. Richelieu" lower left. 17.5 x 15.5 cm Provenance : Succession Laboureur, Ader sale, October 12, 2011, no. 83. Preparatory drawing for a gouache on cardboard sold in the same lot at the estate sale on October 12, 2011.