 Since 1919 he often used oil colors, with which he combined watercolors and colored pencil.The "Villa R" (Kunstmuseum Basel) from 1919 unites visible realities such as sun, moon, mountains, trees and architectures, as well as surreal pledges and sentiment readings.His works during this time include "Camel (in rhythmic landscape with trees)" as well as other paintings with abstract graphical elements such as "betroffener Ort" (Affected Place) (1922).