Senate executive documents, 91st Congress, 1st session. C. Agreement with Canada providing for additional temporary diversions from Niagara River for power production purposes, message from President of United States transmitting text of 2 notes, signed and exchanged at Washington Mar. 21, 1969, constituting agreement between United States and Canada, providing for additional temporary diversions from Niagara River for power production purposes, Apr. 14, 1969.