Whittlesey, Charles, 1808-1886. On fluctuations of level in the North American lakes. By Charles Whittlesey. - [Washington, Smithsonian Institution, 1860] - 25 p. diagrs. 33 cm. - Smithsonian contributions to knowledge. [vol. XII, art. 3] Smithsonian Institution publication 119. . LCCN: s 13000058 Subjects--Topical Terms: Lakes--North America. LC Class. No.: Q11 / .S68