Nicolson, Harold 1886-1968. The Congress of Vienna: A Study in Allied Unity: 1812-1822 / by Harold Nicolson. - New York: Harcourt, Brace and company, 1946. - vi, 312 p. : front., ports. ; 21 cm. "First American edition." "List of books consulted": p. 297-299. LCCN: 46007614 Subjects--Corporate Names: Congress of Vienna, (1814-1815) Subjects--Geographic Terms: Europe--Politics and government--1789-1815. LC Class. No.: DC249 / .N5 1946a Dewey Class. No.: 060.43613 / NIC