Sanitizing the rice
William Dudley (Red Lake), University of South Dakota American Indian Research Project, Part 2, Microfiches of typed manuscripts, South Dakota Oral History Center, Vermillion, Taped interviews 1960-68
'This they were very careful in the sanitation care. Where the jig hole is, there is a canvas spread so the jigger will not walk anywhere else, for he might bring in sand in the rice.
Thomas Vennum, Jr., Wild Rice and the Ojibway People (St. Paul: Minnesota Historical Society Press, 1988), 128.