A pack of four titles exploring the lives and achievements of four important inventors and pioneers. Each title takes one person as its subject and they cover Sir Walter Raleigh, James Cook, Christopher Columbus and Mary Kingsley. As well as providing a full life story and analysis of their work, the authors place their subject's achievements in context by looking at the technological and historical context of the time. Each volume includes: a biography illustrated with colour maps and photographs; a look at the ongoing impact of the subject's work; quotes and writings from newspapers and journals of the time; and information about rivals and the men and women who affected their life and work.