From 1964 to 1974 Lygia Clark and Hélio Oiticica, had an extraordinary correspondence which has now been translated into English.

Lygia Clark (1920-1988) was a Brazilian artist, founder of the Neo-Concrete movement in Brazil along with Amilcar de Castro, Lygia Pape and others. Clark studied painting with Roberto Burle Marx in Rio de Janeiro in the late 1940s and moved to Paris in 1950 to pursue her studies in art. Upon her return to Brazil, she became close with Arte Concreta artists such as Hélio Oiticica, Ivan Serpa and Frank Weissmann. In the 1950s she was included in several Grupo Frente’s collective exhibitions, and she also won the Guggenheim International Award twice (1958 and 1960). During these years her work moved from paintings to architectural spaces and sculptural objects that she employed to study the relationship between the inside and the outside.