= RARE INTERESTING POSTCARD, in which Piet Mondriaan (who since 1912 called himself "Mondrian"), writes from Laren to his fellow artist Jan Verhoeven, who lives in Montmartre, Paris. Mondriaan, who found himself at a crucial moment in his artistic career in 1915, writes: "La circle d'Art Mod. est "fini". Schelfh.[out], Sluyters, Gestel et moi l'ont quittis et tiennent une exposition ensemble, avec quelque choses de la Le Fauconnier, qui est encore ici." Mondriaan was in his Cubistic phase during the time he was part of the mentioned Moderne Kunstkring (founded in 1910). Right after this moment in 1915 and 1916 he started to work in the absolute abstract style, from which De Stijl movement emerged. He writes "Moi je suis a Laren et de temp en temp a Amsterdam." This refers to the period he lived in Laren which was crucial for his development, because this is where he got acquainted with Bart van der Leck and Theo van Doesburg. Mondriaan says he can't move back to Paris yet because of his financial situation: "Je ne peux pas encore rentrer a Paris: il faut avoir quelque argent pour vivre, n'est ce pas?" This obviously gave him extra time to get to meet some of the Stijl artists in the Netherlands. A fine autograph from a crucial period in Mondrian's career. SEE ILLUSTRATION PLATE XCVI.