BALTARD, LOUIS PIERRE (1764-1846), French archi tect and engraver, was born in Paris on July 9, 1764, and died there on Jan. 22, 1846. He was selected to prepare the plans for some of the largest public edifices in Paris. His reputation, how ever, is chiefly based on his great skill in engraving. Among the best known of his plates are the drawings of Paris, Paris et ses monuments (1803), the engravings for Denon's Egypte, the illus trations of Napoleon's wars (La Colonne de la grande armee), and those contained in the series entitled the Grand prix de l'architecture. His son Victor Baltard (1805-1874) designed the Paris Halles in 185i.