[Remark: this is Queen Elizabeth II's first official visit to Canada since her coronation in 1953. She opened the 23rd session of Parliament at Ottawa, 14/10/1957.] Sequence on Queen Elizabeth II and Prince Philip attending sod-turning ceremony opening construction of Queensway Highway with Mayor George Nelms of Ottawa, group marching to dais near Pretoria Bridge, large crowd present, Royal Canadian Mounted Police standing at attention. Shots of dignitaries paying their respects to Queen Elizabeth, shaking hands on dais, of many reporters present. Shots of royal couple leaving in open car. Different sequence on ceremony, mayor and queen on dais, crowd, explosion going off in background, many reporters snapping pictures. (15/10/1957)