Rosemary considered herself very fortunate to have become associated with The Beaver magazine as its interests coincided closely with her own. Recalling what she referred to as the best job of all, "This gave me assignments in remote parts of the Canadian north at a time when the Inuit and Indians were still living on hunting in the traditional way, and the Inuit were just starting to make their famous prints."

Commenting on her career she said, in 1975, "I like to photograph people who are not in a hurry and who understand what I am trying to do. I have found such help from Sinhalese and Tamil people, from Indians and Eskimos, from Metis people, from farmers and fishermen. I have had wonderful cooperation from local people…" She also found some work in the north through the National Film Board and other government agencies.

Another area Rosemary particularly enjoyed was Williams Lake in central British Columbia which she first saw in 1954 when, as she said, "it was still Indian country".

Also in '54 she followed the old route from Montreal to the head of the Great Lakes photographing the Saint Lawrence Seaway. Along the way she captured the scenery and the way of life that was soon to be changed forever due to a recently approved plan for the expansion of the Seaway. The parts of the communities of Prescott, Iroquois, Morrisburg, Cornwall, etc. which were located along the river banks were often the original settlements, and generally the oldest parts of the communities. There were many farms situated along the rich, alluvial soil of the river banks - farms that had often been in the same family for generations. In some cases the original main street ran parallel to the river, with homes, businesses, municipal buildings, churches and schools - all about to be inundated by several feet of water. Rosemary made the return trip on a Canada Steamships Line grain carrier.