With the Viader and Abella diaries the formal documentary descriptions
of Costanoan people and territory east of San Francisco come to an end.
Nevertheless, there are certain other sources which convey information
of use to the ethnographer. These are, first, some of the accounts left
by travelers, particularly those by Chamisso and Choris in 1816
(translated by A. C. Mahr, 1932); second, the vocabularies and
discussion of linguistics written by Fray Felipe Arroyo de la Cuesta
(1837); third, the transcripts of the Mission baptism books made by
Pinart (no date); forth, the accumulated habitation site records of the
California Archaeological Survey. These sources will be used here for
further examination of the location of the aboriginal groups concerned
and their population.