The original mural the Gaucho cover was adapted from was done by a rather obscure Argentinian artist named Israel Hoffman, (1896-1971) The mural is displayed outdoors, on a public wall, as part of the Caminito Street Museum in Buenos Aires. The title is, Guardia Vieja...
Trevor Key (1947-1995) was a British photographer and designer, best known for his work for musical artists of the 1970s and 1980s. One of his best-known covers was for Mike Oldfield's 1973 debut album Tubular Bells.