 In the 1950s, many Portuguese artists, including René Bertholo, travelled to Paris in search of new ideas and Dacosta became a valuable inspiration for them and a source of information about Parisian artistic life.In 1969 Dacosta attended a retrospective of his works from 1939 to 1948 at the Galeria Buchholz in Lisbon and in 1978 his paintings were included in "Portuguese Art since 1910" at the Royal Academy of London, a show that he visited with his friend and fellow-artist, Júlio Pomar.Rediscovering his earlier works at this show (he owned none of them) perhaps gave him an impetus to return to painting.