Memoria presentada al Congreso de la Union por el Secretario de Estado y del Despacho de Fomento, Colonización, Industria y Comercio de la Repúbica Mexicana, Vicente Riva Palacio
A Mexican government report of 1877, submitted to the Congress of the Union by the Secretary of Development, Colonization, Industry and Commerce, Vicente Riva Palacio, and published in Mexico City. Its plates are technical: a rotated ground plan of an astronomical observatory with a site drawing, a column of stepped trench or excavation profiles numbered 18 to 24, a detailed engraved machine part, and a sepia photograph of a rocky hillside with figures. Designers could take the clean measured-drawing style of the profiles and plans, with their hatching, dotted guide lines and labelled numerals, as a model for technical diagrams.
