Discusses the early 19 century journey of Meriwether Lewis and William Clark through the Louisiana Purchase and beyond, for the purpose of explosing the land and establishing friendly relations with native people

Dramatic and defining moments in American history come vividly the life in the Cornerstones of Freedom series

Discusses the race between the United States and the Soviet Union to be the first nation to send a man into space and to land on the moon, including a glipmse of historical, technological, and human factors involved

This easy-to-read biography describes the early lives of Richard Allen, one of the founders of the Free African Society, the first formally organized African American group in the United States; Harriet Tubman, a major conductor of the Underground Railroad; Mary Church Terrell, a founding member of the NAACP and a leading figure in the women

Combining biographical information with vivid illustrations and photographs, an introduction to five noted explorers tells the stories of Mae Jemison, Esteban, James Beckwourth, Jean Baptiste Pointe duSable, and Matthew Henson

Accessible text describes the early lives and notable achievements of Susan McKinney Steward, the first black female doctor in New York State; George Washington Carver, the world-famous agricultural scientist; Ernest Just, a marine biologist; Percy Julian, an outstanding chemist; and Shirley Jackson, a nuclear physicist

Describes what freedom of speech is, how and why it is guaranteed in the United States, how it is expressed, what its limits are, what censorship is, and what some of the surrounding debates are

This book introduces young readers to tiny life on the ground. Colorful photos and simple text encourage children to read on thier own as they learn about the different types of helpful and harmful tiny life on the ground, such as bacteria and fingus

This book introduces young readers to tiny life in a puddle

This book introduces young readers to tiny life on plants