Félicité de LAMENNAIS (1782-1854). L.A.S. " L'abbé de la Mennais ", Paris April 25, 1820, to Baron de SYON in Turin; 1 page and a quarter in-8, address. He recommends to him M. DELPLAN, "a young architect who is going to Rome [] This young artist is the friend of one of the persons for whom I have the most attachment and esteem.