In 1969, the materials were brought together in the Map Room. In 1971-72, the North American holdings were increased by a major donation of early Canadian maps from William H. Pugsley. Donations have also been received from Mrs. Catherine Tudor Hart.
Collection constitutes a major subcollection of the university map collection.
There are some 1,200 North American historical maps. Language English and major European languages. The rest are available by main entry on card files. McGill University, 1982. The W. H. Pugsley Collection of early maps of Canada .