A map of the area around Mexico City showing important sites of General Scott's campaign in the Mexican&ndash:American War (1846-1848). The map shows Lake Joltoca, Lake Cristobal, Lake Tezuco, Lake Xochimilco, and Lake Chalco, and the cities of Humba, San Cristobal, Tanepantla, Tacuba, Chapultepec, Churubusco, San Augustin, and Chalco.