 Fradique Mendes made an early appearance in print in the novel "O Mistério da Estrada de Sintra" ("The Mystery of the Sintra Road", 1870), written jointly by Eça and Ortigão.He attained full elaboration in the lengthy "Correspondência de Fradique Mendes" ("Correspondence of Fradique Mendes"), published after Eça's death in 1900.This was followed by a collection of further posthumous texts and drafts, "Cartas inéditas de Fradique Mendes e mais páginas esquecidas" ("Unpublished letters of Fradique Mendes and other forgotten pages").