Emerging during the 1970s, Installation is associated with Conceptual art and can therefore be traced back to artists such as Marcel Duchamp (1887-1968) and his modernist readymades such as his controversial urinal called Fountain (1917). Other influences include the avant-garde Dada exhibitions in Berlin and Cologne; the work of the collage artist and sculptor Kurt Schwitters (1887-1948), notably his 'Merzbau' assemblage which filled a whole building; the Proun Room at the Berlin Railway Station in 1923, designed by the Russian artist El Lissitzky (1890-1941), possibly the earliest ever installation; the Spatial Environments of the painter and sculptor Lucio Fontana (1899-1968) and his White Manifesto outlining his theories of Spatialism; the "4-33" silent musical composition composed by John Cage (1912–1992). In addition, the assemblages and writings of the American avant-garde artist Allan Kaprow (b.1927) - notably his 1966 book 'Assemblage, Environments and Happenings' - were also highly influential on the development of the Installation genre.