Book excerpt: The Schlager Anthology of Westward Expansion offers an accessible, inclusive sourcebook covering a pivotal era in U.S. history. The set features carefully curated primary sources along with highly targeted activities to help students engage with and analyze primary documents. Presenting marginalized voices, including women, African Americans, Native Americans, and immigrants, this anthology represents a modern approach to historical reference. Document texts are abridged to remain brief and accessible, even to struggling readers (including ESL students), while activity questions range in difficulty from basic to more advanced. Edited by Jennifer Koshatka Seman (Borderlands Curanderos: The Worlds of Santa Teresa Urrea and Don Pedrito Jaramillo) and featuring the contributions of numerous scholars, The Schlager Anthology of Westward Expansion is an essential reference for students, researchers, and teachers of American history.