LITERATURE. 6 L.A.S. Charles Monselet (2 to Hubert, editor of Le Monde illustré), Henri Troyat (4, 1983-1984, including one evoking his neighborhood on rue Bonaparte; plus one L.S.). Attached are a l.a.s. from "Kaplan" (chaplain) Hayd, Oberstadion 1816, concerning musical scores; 3 l.s. from engineers concerning public works in Cairo (1882-1889); and 8 engravings or plates concerning Alsace (3 by Hansi).