Unknown2019-09-112019-09-111964-09-29RPB-105-06-007http://hdl.handle.net/20.500.11867/1797318 sheets 8.5 x 11 inch letterhead. Typed.Six news releases. All are on a letterhead that states "Department of the Interior." See also RPB-105-06-001 through 105-06-009.Dams; Hydroelectric power plants--Columbia River Basin;