On April 30, 1849, Sarah Bayliss Royce, along with her husband, Josiah, and their daughter, Mary, left her home in Tipton, Iowa, and headed for California in a covered wagon. Along the way, she kept a diary which, nearly thirty years later, served as the basis for a memoir she titled Across the Plains . That book has been freshly transcribed by Jennifer Dawes Adkison from Royce's original handwritten document, and this new edition is faithful to the...