The Heroes of the Faith series of books seem to be written towards a younger audience (young adult-ish). Each presents a biography of a notable Christian individual, usually missionaries, sometimes ministers, all of whom are dead.
David Livingstone, known to most through that memorable quote: "Doctor Livingstone, I presume," was not only a naturalist explorer, but also a missionary to Africa, hoping to share the Gospel to people who had not previously heard it, explore the unexplored regions of Africa, and to help abolish slavery, which was in rampant practice by the Portuguese.
The book takes us on a journey across Livingstone's life, from cradle to grave, chronicling each notable milestone (or at least, the big ones, so as to not go too far beyond 200 pages!).
The book was a simple read, suitable for children, though my edition had a very glaring error, in which a picture in a slide show was described as showing Jacob holding a knife to Isaac. If I recall correctly, it either should have been Abraham wielding the knife, or it was a pretty liberal interpretation on how Jacob got Esau's birthright!
If the young people in your life could stand to read a book about a missionary, this one's not so bad. It's not the most exhaustive resource on Livingstone, but it is at least accessible to younger readers.
