The Aboriginal Population of Alameda and Contra Costa Counties, California

A scientific publication written in the mid-20th century. The work offers an in-depth analysis of the Indigenous peoples residing in the Alameda and Contra Costa counties, focusing on their demographics, ecology, and the various interactions they had with European explorers and settlers. It explores historical accounts, expeditions, and the cultural landscape of the region, particularly during the late 18th century. At the start of this work, Cook outlines the purpose of his research, aiming to expand upon previous studies of California’s aboriginal populations. He emphasizes the need to provide a detailed examination of a specific geographic area occupied by groups associated with the Costanoan linguistic division. The initial chapters recount notable expeditions, including those led by Fages, Anza, and Cañizares, documenting their observations on the native villages, populations, and natural resources they encountered. The opening sections also introduce various native tribes' lifestyles and cultures while establishing a historical context relevant to later discussions about the impacts of colonization and missionization on these communities.