John Roloff
John Roloff (b. 1947) is an American sculptor and conceptual craft artist. He is known for his site-specific work dealing with natural systems and the environment. Education and early life. Roloff was born in Portland, Oregon in 1947. attended UC Davis where he studied geology and art. He completed his graduate work in 1973. Work. During the late 1970s through the early 1990s, Roloff produced a series of site-specific kiln/furnace pieces. In addition to ceramic work and sculpture, Roloff has created numerous works of public art including the work, "Green Glass Ship–Deep Gradient/Suspect  Terrain," at the Yerba Buena Center in San Francisco. Collections. Roloff's work is held in the permant collections of the National Museum of American Art, the San Francisco Museum of Modern Art, the Fine Arts Museum of San Francisco, the Chazen Museum of Art, among other institutions. His papers from 1980–2002 are held in the Archives of American Art of the Smithsonian Institution.