South American Explorers Peru. In Lima, Montague met with the Don Griffis, the business manager of the weekly "Peruvian Times" (then called the "Lima Times" because of conflicts with the military regime of Gen. Juan Velasco Alvarado). Montague proposed starting an "explorers club" and magazine, where the members would be the source of articles. Griffis wasn't convinced but offered Montague six months of "subsistence allowance" to see if the idea would take off. Back in the U.S. Montague and Rosa visited the New York Explorers Club, which was supportive of his venture but declined to offer reciprocal membership because the South American Explorers
Juan Bautista Alvarado Frémont arrived in Monterey at the beginning of 1846. Afraid of foreign aggression, Castro assembled his militia, with Alvarado second in command, but Frémont went north to Oregon instead. An unstable political situation in Mexico strained relations among the Californios and it seemed that civil war would break out between north and south. On July 7, Commodore John D. Sloat occupied Monterey, declaring to the citizenry that the Mexican–American War had begun. Pico, Castro, and Alvarado set aside their differences to focus on the American threat, but by the end of August, Pico and Castro fled to Mexico, and Alvarado