Even the earliest readers can learn about Sacagawea’s contributions to U.S. history through this volume in the My Itty-Bitty Bio series. Related in the first person, the large-font biography depicts a digitally rendered image of Sacagawea throughout. Simple yet clear sentences describe her Native American heritage, the meaning of her name, and her marriage to a fur trader. The bulk of the book, however, recounts her travels with explorers Lewis and Clark, her special skills and talents (e.g., translating for the explorers, making clothing, gathering safe food), and what she saw along the way. Accompanying photographs, reproductions, and illustrations offer visual clues and more information about the text. Occasional guided questions, an easy time line, and a glossary make this a good first biography and introduction to the nonfiction format.