Here are some resources with information on people you are researching.
Ailey, Alvin - Official bio, PBS Free to Dance
Ali, Muhammad - African American Athletes page
Armstrong, Louis - African-American musicians
Amos, Wally - official website
Angelou, Maya - Academy of Achievement, official website
Bearden, Romare - Official biography
Belafonte, Harry - NY Times Biography
Berry, Chuck - Rock & Roll Hall of Fame bio
Bridges, Ruby - School Desegregation links
Brooks, Gwendolyn - Illinois Poet Laureate biography
Brown, James - African-American musicians
Burke, Selma - Anyone Can Fly Foundation, Kennedy Center bio
Carlos, John & Tommie Smith - African American Athletes page
Coleman, Bessie - PBS Fly Girls biography
Davis, Benjamin O. (Senior) - Center of Military History biography,
Drew, Charles - National Library of Medicine biography
Edelman, Marian Wright - Learning to Give biography
Fitzgerald, Ella - Official website biography
Franklin, Aretha - African-American musicians
Gibson, Althea - Biography on official website
Hendrix, Jimi - African-American musicians
Henson, Matthew - National Geographic Profile, Timeline
Horne, Lena - African-American musicians
Hughes, Langston - Kansas Heritage Group biography
Jemison, Mae - NASA Biography
Johnson, Jack - PBS Unforgivable Blackness
Jones, James Earl - Academy of Achievement biography
Jordan, Michael - ESPN biography
King, B.B. - African-American musicians
King, Coretta Scott - Academy of Achievement biography
King, Martin Luther - Civil Rights Leaders
Louis, Joe - Black History Now website
Marshall, Thurgood - PBS The Supreme Court, Black History Now biography
Mays, Willie - Academy of Achievement biography
Morton, Azie Taylor - NY Times obituary
Obama, Barack - African American Leaders
O'Ree, Willie - Legends of Hockey, NHL.com Bio
Owens, Jesse - African American Athletes page
Paige, Satchel - American National Biography Online
Parks, Rosa - Civil Rights Leaders
Robeson, Paul - PBS American Masters
Robinson, Jackie - African American Athletes page
Rudolph, Wilma - African American Athletes page
Smith, Tommie - - African American Athletes page
Tanner, Henry Ossawa - Black History Now biography
Washington, Booker T. - African American Leaders
Winfrey, Oprah - official biography