“The Explorers,” by Amanda Blows (William Morrow) “The Explorers,” by Amanda Blows (William Morrow) The subtitle of “The Explorers” is “A New History of America in Ten Expeditions.” It’s an odd description, because several of the 10 aren’t really explorers, and others aren’t exploring America. That aside, the book is a list of people who’ve made a mark as pioneers. The book starts with two who actually are explorers, and well-known: Sacagawea and Jim Beckwourth.