11. National Registration Card, United Kingdom Creator: From the Collection: Mondrian, Piet, 1872-1944 Published / Created: 1940 May 22 Call Number: GEN MSS 1102 Container / Volume: Box 4, folder 100 Image Count: 2 Found in: Beinecke Rare Book and Manuscript Library > Piet Mondrian papers (GEN MSS 1102) > Series II: Other Papers > Personal Papers > National Registration Card, United Kingdom
12. Social Security Card, United States Creator: From the Collection: Mondrian, Piet, 1872-1944 Published / Created: circa 1941 Call Number: GEN MSS 1102 Container / Volume: Box 4, folder 104 Image Count: 2 Found in: Beinecke Rare Book and Manuscript Library > Piet Mondrian papers (GEN MSS 1102) > Series II: Other Papers > Personal Papers > Social Security Card, United States
13. [Meaning of plastic expression] Creator: From the Collection: Mondrian, Piet, 1872-1944 Published / Created: circa 1942-1943 Call Number: GEN MSS 1102 Container / Volume: Box 2, folder 62 Image Count: 3 Found in: Beinecke Rare Book and Manuscript Library > Piet Mondrian papers (GEN MSS 1102) > Series I: Writings > Partial Essays > [Meaning of plastic expression]