Files available on the Scholars Portal Geospatial Portal http://geo1.scholarsportal.info/ Correspondence Files between 2006 and 2011 are also listed
CENSUS SUBDIVISION (CSD)
From http://ccri.library.ualberta.ca/enindex.html: The CCRI represents an infrastructure that facilitates research on the transformation of Canadian society in the twentieth century.
1981 Census of Canada census tract boundary files digitized in 2012 by census metropolitan area based upon CARTLIB files [insert link].
These files have been converted to shapefile (ESRI) format from e00 format.