Susana Torruella Leval analyzes the works: Casa Singer [Singer House] (1991), La casa de los mapas [The House of Maps] (1991), Rilkehause (1991), Kamikaze (1991), La casa del grabador [The Printmaker’s House], La ceiba de Ponce [The Ceiba Tree of Ponce] [(1991), La casa verde [The Green House], Casa Blanca [The White House] (1990), La casa del fuego [The House of Fire] (1991), and La casa en el aire [The House in the Air] (1992). Antonio Martorell (Santurce, b. 1939) was trained at the Taller de Gráfica del Instituto de Cultura Puertorriqueña [Puerto Rican Cultural Institute Print Workshop] under Lorenzo Homar. During his career, Martorell worked as a theater set and wardrobe designer, poster artist, printmaker, painter, book illustrator, professor, and writer. But, most importantly, he has been a graphic designer. In 1968, he founded the Taller Alacrán [Scorpion Workshop]—a workshop-art school devoted to criticizing Puerto Rican social conditions and politics—and managed it until 1971. In 1974 he was among the prize-winning artists at the III Bienal de San Juan del Grabado Latinoamericano [3rd San Juan Biennial of Latin American Prints]. Two years later, on the eve of the 4th Biennial he resigned from the jury because he was opposed to using funds from the United States bicentenary to finance the event. Multiple protests led to the cancellation of the 4th Biennial in 1976, and the event did not take place until 1979. Martorell was honored with a retrospective exhibition at the 7th Biennial in 1986. A year earlier the FBI raided his home as part of an attempt to arrest presumed members of Los Macheteros [the Machete Wielders], an underground revolutionary group that worked tirelessly to promote Puerto Rican independence.