The editor offers children twenty biographies, adapted from different sources; all are in easy to read English and all are filled with action. They are the type of tales that teenagers will enjoy reading. He introduces the bios with an introduction in which he addresses a number of subjects, such as why do people need heroes, what kind of people are heroes, how did stories about heroes develop, what are myths, why are hero tales filed with giants and other unusual kinds of beings, and why are courage, strength, and achievement extolled. He tells his readers that heroes can have faults.
All of the twenty bios that he chose are of men. Some are from myths, the Bible, and history. They are about Perseus, Hercules, Daniel, David, St. George, King Arthur, Sir Galahad, Siegfried, Roland, King Alfred, The Cid, Robin Hood, Richard the Lion-Hearted, Saint Louis, William Tell, Robert Bruce, George Washington, Robert E. Lee, Abraham Lincoln, and Father Damien. Readers may argue that he missed some important men and lots of important women, but they will most likely not disagree that the excerpts that he chose to insert into his collection are interesting and informative.