There sure are a lot of of African-American firsts with the letter B in them.
Edward Brooke III, first elected Senator
Booker T. Washington
"Beulah," first radio and TV show to star an African American
Ralph Bunche, first African American to win a Nobel
Senators Blanche Bruce and Carol Mosley Braun
Guion Bluford, the astronaut
Cora Brown, first black woman elected to state senate
...I may be overdoing the quiz show cramming.