"Describes the life and times of African American entrepreneur C.J. Walker"--

Discusses how planes fly, their parts, and their different uses.

Describes the life of an elephant seal.

A simple introduction to different kinds of ships and how they are used.

This book explains how people can feel air, how the atmosphere keeps Earth warm, and how people can keep air clean.

These beginning books invite young readers to explore the world of transportation. Bold, full-color images illustrate informative text. From airplanes to tractors, this series encourages an interest in the machines and activity around us.

A biography of famous African-American baseball player Jackie Robinson.

Briefly describes different kinds of tractors and other related machines and the work they do.

Presents biographical sketches highlighting the contributions of women, mostly American, to the field of medicine in the nineteenth and twentieth centuries.