The Prime Minister At Niagara Falls -- The Prime Minister and Miss Mary Churchill at the famous Horseshoe Fall. The Prime Minister remarked that he first visited the Falls in 1900.On his way to the United States the Prime Minister spend two hours at Niagara. He visited the Falls and made a tour of local beauty spots on the Canadian side. He was accompanied by his daughter Miss Mary Churchill, and was shown round by Major General C.F. Constantine of the Canadian Army. The party crossed into the States by car and rejoined the special train at Niagara Falls station. August 01, 1943. (Photo by British Official Photograph).