[ENGINEERING - BRIDGES AND ROADS] Set of 2 volumes including: - Collection of 245 drawings or sheets of Texts relating to the Art of Engineering. Extracted from the first collection completed in 1820, and lithographed at the École Royale des Ponts et Chaussées, 1826. In-folio, title page, table leaf and 245 numbered plates including a few pages of text. Bound in unbleached half cloth, with red leather title page. - Collection of 239 drawings or sheets of Text Relating to the Art of Engineering. Extracted from the second Collection completed in 1825 and lithographed at the École Royale des Ponts et Chaussées, 1827. In-folio, title page, table leaf and 273 numbered plates including a few pages of text. Bound in unbleached half cloth, with red leather title page. Beautiful lithographed set of technical drawings of machines, instruments and buildings. (worn binding, accidents to corners and covers). Expert : Monsieur Nicolas Asvisio