In June 1846 Susan Shelby Magoffin, eighteen years old and a bride of less than eight months, set out with her husband, a veteran Santa Fe trader, on a trek from Independence, Missouri, through New Mexico and south to Chihuahua. Her travel journal was written at a crucial time, when the Mexican War was beginning and New Mexico was occupied by Stephen Watts Kearny and the Army of the West. Her journal describes the excitement, routine, and dangers...