Before the dawn of history / by Charles R. Knight; illustrated by the author. Knight, Charles Robert, 1874- Paleontology Juvenile literature. Prehistoric peoples Juvenile literature. QE714 .K6 571 KNB Table and illustrations on lining papers. London : Whittlesey House, McGraw-Hill Book Company,inc. c1935. c1935. 1935 Text xiii, 119 p. : eng