Laying aside for the time being the work on Central America and Mexico, Bancroft and Oak decided to direct the activities of a library force now thoroughly trained to the material on California, since California history is the starting point for that of a number of other states, including Northern Mexico, Arizona, Nevada, and Utah, and more especially because the mass of original material collected for this state was greater than for any other, a fact necessitating the reduction to a minimum of the possibility of its accidental destruction while yet unused: (Lit. Ind., 583.) The actual organization of the material on the Southwest, including the writing of the history of the Northern Mexican states and Texas down to 1800, together with the Spanish and Mexican annals of Arizona, New Mexico, California, and the Northwest Coast, was entrusted to Oak as his special field. The story of the collection of this California material as told by Mr. Bancroft (Lit. Ind., 365 and sq.) is one of the most interesting connected with the history enterprise. In October, 1873, there had entered his service one Enrique Cerruti, an erratic individual, born in Italy, but intimately acquainted with the ways of Spanish-Americans through a long residence in Bolivia, under the government of which state he had served in a diplomatic capacity. Cerruti's diplomacy was turned toward the securing of historical facts in the possession of the old Spanish residents of California, and the first task set for his craft was to gain the coöperation of General Vallejo, a native Californian, early alcalde at San Francisco, and colonizer of Sonoma. After several months' negotiations, his efforts were rewarded by a personal narrative from Vallejo, by the gift of his papers, and by his enthusiastic support in gaining the aid of other Californians of his own race. Among those who furnished dictations at his instance were two of his brothers, and his nephew Alvarado, Governor of California under Mexican rule. For two years Cerruti and Vallejo worked together collecting, their time being divided between Sonoma, San Francisco, and Monterey, from which centers they made divers excursions. It seems that the wily Italian, together with other representatives of Mr. Bancroft, sometimes gained possession of valuable manuscripts by such indirection as to cause much dissatisfaction on the part of the original owners.