1. Coordinating Committee , 1970 . Lake Superior Outflow 1860-1968 . The Coordinating Committee on Great Lakes Basic Hydraulic and Hydrologic Data, p.43 .
2. International Joint Commission , 1976 . Further Regulation of the Great Lakes . International Joint Commission Canada and United States, p.96 .
3. Stochastic analysis of Lake Superior elevations for computation of relative crustal movement
4. Levels and Flows Work Group , 1969 . General Great Lakes Information . Great Lakes Basin Comprehensive Basin Study, p.74 .