QUEVEDO Y VILLEGAS, Francisco de. Pablo de Segovia. The Spanish Sharper. London: Unwin Brothers for T. Fisher Unwin, 1892. Folio (345 x 255 mm). Photogravure frontispiece of Quevedo after Velasquez, profusely illustrated by Daniel Vierge. (Scant spotting.) Original vellum, brown morocco lettering-pieces gilt, edges stained red (soiled, lettering-pieces chipping with losses, covers slightly bowed). Vierge, known as the "Father of Modern Illustration," and French photo-engraver Gillot, developed a process to transfer a drawing directly to a metal plate using photography. Pablo Segovia was the first work produced using their revolutionary new method.