NEGREIROS, José de Almada.- A invenção do dia claro.- Lisbôa: “Olisipo” Apartado 145, 1921.- 45 [3] p.: 1 retrato; 25 cm.- E. Author's dedication, in his usual handwriting, on the inside endpapers: to Eng. Pedro Alvellos. Almada 6-6-69. 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 chose to inaugurate his publishing house Olisipo with this very text. Untrimmed copy, with very slight foxing, but generally clean, preserving both paperback covers, with slight wear and the flaps intact. It is worth noting that the covers enclose the first and last pages. Full sheepskin binding, signed Fersil - Porto, with gold inscrption on the front cover, ornamental borders on the covers, closed panels on the spine and roll on the squares.