This brief encyclopedia entry gives an overview of Roberto Clemente's outstanding career in baseball as well as his humanitarian efforts in Latin America.

A very brief biography of Oprah Winfrey in this encyclopedia article. There is a link to her website.

This encyclopedia article is a brief biography of Dred Scott, the slave who sued for his freedom. His case went all the way to the U.S. Supreme Court, where he lost.

Encyclopedia entry describes the Black Panther Party: its beginnings, important leaders, and role in the African American communities of the 1960s and 1970s.

This encyclopedia article tells the heroic story of the Tuskegee Airmen, the black fighter pilot squadron which fought in WW II and led the way to integration of the military.

Read this encyclopedia entry to find out about Magic Johnson's basketball career and his foundation to fight HIV/AIDS.