This is one of the Superstars series, consisting of six Pupils' Books, two Teacher's Books and two Omnibus Editions, features men and women who took action to make their world a better place.

In Loud Speakers:

* How Samuel Crowther escaped slavery, became a bishop and talked to his fellow Africans about freedom

* Why Arthur Stacey wrote Eternity all over Sydney

* How Archbishop Janani Luwum would not keep quiet and was executed in Idi Amin's Uganda