– Three primary and three secondaryPrimary Source:-1. So Far from God: The U.S. War With Mexico, 1846-1848 by John S.D. Eisenhower2. A Glorious Defeat: Mexico and Its War with the United States by Timothy J. Henderson. 3. Invading Mexico: America’s Continental Dream and the Mexican War, 1846-1848 by Joseph WheelanSecondary:-1. Book:-A Country of Vast Designs: James K. Polk, the Mexican War and the Conquest of the American Continent (Simon & Schuster America Collection) by Robert W. Merry 2. https://www.loc.gov/rr/program/bib/mexicanwar/3. https://history.state.gov/milestones/1830-1860/texas-annexation