This article deals with two dedications signed by the publisher Francisco de Robles but which most certainly written by Cervantes along with an equally cervantine prologue «To the Reader» found in the Obras of Diego Hurtado de Mendoza, 1610. All three texts are reproduced in the article. By examining in detail these books, and more specifi- cally the bibliographie history ofthe Obras of Blosio (Louis de Blois), we can learn something about the final years of Cervantes's life. They also offer some enlightenment concerning Don Quixote as well as on the printing office (in Barcelona, not Taragona) where Avellaneda's fake sequel was produced.