Alfred GUILLOU (1844–1926). Portrait of Jean-Christophe Kula (1823–1888). Oil on canvas, signed in the upper left corner. Height: 56 cm - Width: 46 cm Note: Jean-Christophe Kula, of German origin, moved to Paris to work as a carpenter. He had four sons, including Charles Kula, a pioneer in the apprenticeship system and the transmission of craftsmanship in the construction industry beginning in the late 19th century, and founder of the Atelier École on Rue des Épinettes in Paris.