What Are the Galapagos Islands? Where is the Eiffel Tower? Who Was Harriet Tubman? Answer these questions and dozens more in this fun, smart series of books. They’re well researched and written in simple concise language that appeals to young readers. Each book has a timeline, map and other pertinent and helpful facts and antecdotes. There are also illustrations and other surprises peppered through the text. There are over 120 titles in the series and the website WHOHQ allows readers to keep track of the titles that they’ve read. You kind find dozens of titles available through the Houston Public Library or your favorite independent bookstore.