Compositions   1926: Piano Concerto 1936: El Salón México 1938: Billy The Kid 1940: Quiet City 1942: Danzón Cubano 1942: Rodeo 1944: Appalachian Spring 1954: The Tender Land 1959: Dance Panels 1973: Threnody 1 & 2	Philosophy 1900: Russell: Principia Mathematica 1929: Heidegger: What is Philosophy?         1943: Sartre: Being and Nothingness   1956: Dewey: Reconstruction in Philosophy     1970: Ayer: Metaphysics and Common Sense