ANDRADE, Manuel Carlos de.- Luz da liberal e nobre arte de cavallaria.- Lisboa: Na Regia Officina Typografica, 1790.- XXVI, 454, [1, 1 br.] p.: 93 gravuras, 1 retrato; 35 cm.- E. Good copy, very clean and complete (retains the final errata page, with the blank verso), of one of the most beautiful books printed in Portugal in the 18th century and, certainly, one of the most sought after. Inocêncio states that some intended to attribute the work to the 4th Marquis of Marialva, chief equerry, but this has not yet been confirmed. The 93 engravings, of which 22 are foldable (all well folded and placed), represent mainly attitudes of the horse in teaching and are opened on copper plate by several engravers, mainly Luís Fróis, but also Manuel Alegre, Luís Fernandez Piedra and others, according to originals by Joaquim Carneiro da Silva (Ernesto Soares, História, 1076). Print 76 (p. 390) presents a curious inscription: Silva del. — H. Queverdo aqua forti et terminé par J. J. Droüet 1792 (engravers not mentioned by E. Soares). The prince regent, future king D. João VI, is represented in engravings 21, 29, 53 and 59 (E. Soares and Ferreira Lima, Dictionary of Iconography, 1549 B). Allusive vignettes at the beginning of books I and VI. Portrait of the Prince Regent with a slight stain on the lower margin, a smaller stain on the lower edge of approximately 30 pages in the middle of the volume and a small tear on the fold of the last engraving, without lack of support. 19th century binding, fully sheepskin, with painted patina, preserving the original marbled paper endpapers. Inocêncio, V, 386. Ameal, 108. Torrecilla, 25 ([Edición] digna de las magníficas ediciones ilustradas del caballero Pluvinel y del duque de Newcastle).