In parallel to his oil painting, Gen Paul always practised drawing and gouache. During certain periods of his life, and especially towards the end of his career, works on paper dominated his production. None of the gouaches in the A. G. Leventis Collection is dated and, given that the artist frequently repeated his motifs with minor variations, it is very difficult to define when they were executed. Since Cycliste et Joueurs de Boules à Sanary (see p. 308) is set in Sanary, on the Mediterranean coast, it is possible that it dates to 1940, when the painter, wishing to avoid World War II, sought refuge in the Midi. As for the rest, inasmuch as they are quite homogeneous in style, one could suggest that they date to the 1950s.
He never received any formal training, but had taken up drawing at a young age and turned to painting, in Montmartre, after the amputation of his leg in World War I. He practised oil painting, watercolour, gouache, engraving and lithography, in a dynamic, colourful, Expressionist style. He returned throughout his career to his preferred themes, amongst which are landscapes, still lifes, horse races and bullfights.