This collection introduces four real heroes. They are important figures in the history of mankind. They are the greatest. The first man to set foot on the moon, the inventor of the light bulb, the first expedition to climb Everest or the first woman to take a nonviolent stand against racial segregation. They are flesh and blood heroes. They do not have extraordinary powers but they have made us better people. The books contain photographs; have a pop-up design and a short and simple text suitable for the readers they are aimed at.