Raquel Williams, left, is vice chair of the Wilton Rancheria. She and her sister, Isabella Williams, Amanda Geisdorff and mother Daveen Williams, left to right, pose for a portrait after demonstrating ...

On a balmy day last week south of Sacramento, a group of women took turns grinding and preparing acorn flour, and then used fire-heated stones to cook it with water in woven baskets. It was a slow and ...