1914-

A biography of the scientist and humanitarian who discovered the vaccine for polio, a disease which crippled many people in the early part of the century.

Photographs and text describe the first successful climb to the top of Mount Everest and the many failed attempts made prior to the 1953 triumph.

A biography of one of baseball's greatest players. Includes a trivia quiz.

Presents a profile of twentieth-century scientist Jonas Salk, developer of the polio vaccine, discussing his childhood in New York, his education, and the significance of his vaccine and other research in medical science.

Presents the life and career of the Mexican poet.

Discusses the life and accomplishments of Jonas Salk, including his discovery of the vaccine against polio and his work on influenza and AIDS.

Simple text and photographs teach young readers about the importance of teamwork, using the experiences of mountain climbers Sir Edmund Hillary and Tenzing Norgay, who worked together to climb the world's highest mountain.

Biographical sketches of three baseball players renowned for their batting skill: Rogers Hornsby, Joe DiMaggio, Ted Williams.

A biography of the scientist and humanitarian who discovered the vaccine for polio, a disease which crippled many people in the early part of the twentieth century.

A biography of the scientist and humanitarian who discovered the vaccine for polio, a disease which crippled many people in the early part of the twentieth century.