Subject categories
Agriculture, Business, Commerce & Industry → Industries - Canada
Anthropology, Ethnology, Exploration & Travel → Canada - Description and travel
Anthropology, Ethnology, Exploration & Travel → St. Lawrence Seaway
Climate, Environment, Natural Resources & Disasters → Waterways
Communications, Infrastructure, & Transport → Public works - Canada
Communications, Infrastructure, & Transport → Transportation - Canada
Documentary
Documentary → Documentary films - Canada
Economics, Philosophy, Politics, Religion & Sociology → Canada - Economic conditions
History → Canada - History
Mathematics, Science & Technology → Civil engineering
Places → St. Lawrence Seaway
Short films
Short films → Short films - Canada