California Indian Acorn Culture. 1923 photo essay
Bread from Acorns. 1933 video
C. Hart Merriam. "The Acorn, A possibly neglected source of food." p129-137 National Geographic 1919. Wonderful pictures
C. Hart Merriam Collection of Native American Photographs. UC Berkeley. 1908
Restoring California Black Oak Ecosystems to Promote Tribal Values and Wildlife USDA pdf 2016
Indian Grinding Rock State Park
Grinding holes stone at Los Padres National Forest
Sk'ee' Acorn mush, soup
Making acorn mush at the Smithsonian Folklife Festival