While in other Soviet cities and republics monumental mosaics became common in the 1960s, in Moscow mosaic was used for art-deco works and social realist 'pictures'. The entire history of Soviet art is thus reflected in Moscow's metro stations, palaces of culture, military museums, hospitals, schools, and prefabricated houses. Today, many of these works are disappearing before our eyes, victims of destruction or dismantling; the majority are not listed as under state protection,...