appendix ANALYSIS AND CONSIDERATIONS ON THE PRODUCTIOn OF MONDRIAN DURING THE SECOND PARISIAN PERIOD (1920 - 1938) IN RELATION TO THE DISAPPEARED WORKS The present Chapter in “Appendix” was developed once the entire research on the Missing Works and the related Reconstruction’s Study was completed. This further analysis stems mainly from the fact that for many works considered to have disappeared, some doubts have emerged regarding the Provenance. All the works presented in this study have been cataloged as “disappeared”, but in reality some of these are works that certainly no longer exist because they are “destroyed”, while the others are actually “vanished”. Overall, Mondrian’s disappeared works are 28. 25 are present in the “Catalog Raisonnè”, 3 have been cataloged in the “New Acquisitions”. Two works belong to the naturalistic period, the other 26 works are those dealt with in this study. In the analysis of this chapter, 24 works are treated, as the remaining two are not relevant. These are: B178 Stage Set Model created by Mondrian for “l’éphemère est éternel” for Michel Seuphor, as a work destroyed by Mondrian himself; B179 Cover design for the Polish translation of “Le Néo-Plasticism”, as a non-pictorial work. The 24 missing works are divided into two categories: 6 works “destroyed” for various reasons, fires, war events; 18 works are those really “disappeared”, whose traces are lost in different moments and for completely mysterious causes. As we will see, these 18 works fall in a precise period from 1923 to 1927. Period in which Mondrian has sent practically all his production (30 works out of 40), to Germany. These works were sold to only two references: Sophie Küppers and the Kunstausstellung Kühl Gallery in Dresden. We will see, that for many of the missing works, a decisive moment was the exhibition “Der Stuhl” of 1929 in Frankfurt. On the occasion of this exhibition, the works were available in the Kunstausstellung Kühl Gallery. We will also see, that a good part of “disappeared works”, in addition to other “existing works”, after a long period of disappearance, are “miraculously reappeared” in various locations near Collectors, Galleries and Museums. At the end of this further analysis, a Diagram was also produced that visually traces the path of each work up to its final destination, obviously as far as it was possible to find the information.