NEGREIROS, José de Almada.- A invenção do dia claro.- Lisbôa: “Olisipo” Apartado 145, 1921.- 45 [3] p.: 1 retrato; 25 cm.- E. Original edition of one of the author's rarest titles, illustrated with his self-portrait. It transcribes one of the lectures that most impressed Fernando Pessoa, who in that same year would choose this text to inaugurate his publishing house Olisipo. The copy, only slightly trimmed at the head and with some foxing, retains the booklet covers with the flaps, but does not include any pages. Full green morocco binding, signed Invicta Livro, engraved in black on the top, reproducing the booklet cover of the leaflet.