Landscape and memory become deeply intertwined throughout Grit and Ghosts as Foster wanders through park ranger Marguerite Lindsley's Yellowstone, through Mexican faith healer Teresa Urrea's Sonoran Desert, and through author Gertrude Stein's deeply altered Oakland. Part excavation, part resurrection, Grit and Ghosts is permeated with the individual and collective memories of Foster and her subjects, like ghosts of history.