One source not available for other areas is the mission records. The converts from the delta and lower San Joaquin Valley were brought almost exclusively into the San Francisco, San Jose, and Santa Clara missions. The baptism books of these missions have been preserved, and two copies have been made. The first, of the San Francisco Mission, was made by A. Pinart in 1878 and is at present in the Bancroft Library in Berkeley. The other records, copied by S. R. Clemence in 1919, include the records of all three missions and are now to be found, in typed form, among the manuscripts in the file of C. H. Merriam. The baptism books set forth the name and village of origin of every native in the mission, as well as the date of baptism. Newly converted gentiles are readily distinguished from infants born in the mission itself, since the origin of the latter is ascribed to the mission and not to a village. In addition to the names of villages, not all of which can be located with certainty, the dates of baptism constitute almost conclusive evidence. If the baptisms from San Francisco and Santa Clara are tabulated by village and date, it is very clear that the villages of local tribes were cleaned out before the year 1805. At this point an entirely new set of names appears, most of which are undoubtedly in the Tulares. Hence, if the name of a village does not correspond to any now known to ethnographers and no baptisms are reported from it prior to 1805, the conclusion is warranted that the village was actually situated in the central valley. The same assumption may be made with somewhat less certainty concerning the San Jose records. This mission was founded in 1797 and its earliest converts were drawn from the Costanoan tribes on the east shore of San Francisco Bay. The reduction of this region may not have been complete by 1805 and Tulare Indians were coming in by that year. Hence there is a chance of overlap. This source of error, however, may be excluded for all practical purposes if no doubtful village which continued to furnish converts after 1810 is included in the list, for the reduction of the Costanoans was certainly complete by that time.