The most important of his publications are L'Imitation de Jésus-Christ (folio), Télémaque (quarto) and Tableau de L'Empire Ottoman (folio). One of his daughters married Bernardin de Saint-Pierre. Third generation Pierre Didot Pierre Didot (son of François-Ambroise Didot) was born in 1760 and died in 1853. Pierre Didot was awarded a gold medal at the exhibition of 1798, for his edition of Virgil. By order of the Government, his presses were established in the Louvre, where they remained during the Consulate. The celebrated Louvre editions are Virgil (1798), Horace (1799), Racine (1801–5), La Fontaine (1802), and Boileau (1816). The board of examiners of the 1806 exhibition pronounced the Racine edition "the most perfect typographical production of all ages". Pierre Didot was also a poet and translated in verse the fourth book of Georgics, the first books of Horace's Odes, and wrote a number of original poems. Firmin Didot Firmin Didot (son of François-Ambroise Didot) was born in 1764 and died in 1836. Firmin Didot was the inventor of stereotypography which entirely changed the book trade. Firmin Didot was the first to engrave slips of so-called "English" and round hand-writing. Among the works which issued from his press were Les Ruines de Pompéi, Le Panthéon égyptien of Champollion-Figeac, and Historial du Jongleur, printed in Gothic type, with tail-pieces and vignettes, like the editions of the fifteenth century. In 1827, Firmin Didot gave up business to devote himself to politics and literature. He was a member of the Chamber of Deputies and wrote tragedies (La Reine de Portugal, La Mort d'Annibal) and essays on literary topics. Along with Giambattista Bodoni of Italy, Firmin Didot is credited with designing and establishing the use of the "Modern" classification of typefaces. The types that Didot used are characterized by extreme contrast in thick strokes and thin strokes, by the use of hairline serifs and by the vertical stress of the letters. Many fonts today are available based on Firmin Didot's typefaces. These include Linotype Didot and HTF Didot . Henri Didot Henri Didot (son of Pierre-François Didot) was born in 1765 and died in 1852. Henri Didot made a name for himself as an engraver, founder, and engine-maker. In 1827, he engraved the microscopic type called 'Non Plus Ultra' that was used for the editions of the "Maximes" of La Rochefoucauld and Horace's works. This type was so small that, to cast it, he had to