According to Wikipedia:

Miwok (also spelled Miwuk, Mi-Wuk, or Me-Wuk) can refer to any one of four linguistically-related groups of Native Americans, who lived in what is now Northern California, who spoke one of the Miwokan languages in the Utian family. The word Miwok means people in their native language. There are four geographically and culturally diverse ethnic subgroups of Miwok people, each with a different history and culture, as follows:

• Valley and Sierra Miwok: from the western slope and foothills of the Sierra Nevada, the Sacramento Valley, San Joaquin Valley and the Sacramento-San Joaquin Delta.

• Coast Miwok : from present day location of Marin County and southern Sonoma . (This includes the Bodega Bay Miwok and Marin Miwok).

• Lake Miwok: from Clear Lake basin of Lake County.

• Bay Miwok: from present-day location of Contra Costa County.

Generally all Miwok were a hunting and gathering people who lived in small bands without centralized political authority before contact with European Americans in 1769 and generally Miwok mythology and narratives were similar to other natives of Northern California. Miwok believed in animal and human spirits, and saw the animal spirits as their ancestors. Coyote was their ancestor and creator god.
In 1770, there was an estimated 500 Lake Miwok, 1,500 Coast Miwok, and 9,000 Plains and Sierra Miwok, totaling about 11,000 people, according to historian Alfred L. Kroeber, although this may be a serious undercount, for example he did not identify the Bay Miwok. [2] The 1910 Census reported only 670 Miwok total, and the 1930 Census 491, see history of each Miwok group for more information.[3]

(Wikipedia contributors, "Miwok," accessed 2/16/08)

This reference first appears on page 203.
Robinson use this refrence to show that Klem are in the New World near present day San Fransico.