As detailed in the Department of the Interior's May 22, 1852 report listing the tribes that were hunted down by the Mariposa Battalion and forced to sign the treaties between May 13, 1851, and January 1852, no tribal representative from any of the Yelamu Ohlone people ever signed away their ancestral lands. California representatives were successful in blocking the ratification of the treaties and censoring any knowledge of them for over fifty years.
