During the 1950s Morrison lived in North America. Joining the Alpine Club of Canada (ACC) in 1955, he climbed and guided extensively in the Rockies around Banff and Lake Louise. Among 14 first ascents made in the Rockies, Bugaboos, and Coast Range during this period were Mount Morrison (Alberta, 1955)], and Mount Jerram (1957) with Canadian climber, Jim Tarrant. In 1955 Morrison and Tarrant made the first ascent of the NE Buttress of Mount Odaray - deemed one of the most formidable climbs in the country with Morrison leading the route: