McGrath, Patrick 1950- The Lewis and Clark Expedition : / P. McGrath. - Morristown : Silver Burdett Company, 1985. - 144 p. : ill. ; 20 cm. - Turning points in American history A Silver Burdett library selection . Index, p. 62-63 ISBN: 0-382-06828-9 Subjects--Topical Terms: History--USA Subjects--Index Terms: Lewis and Clark expedition (1804-1806)