The LAC site says "Do you
ever wonder who your first Ukrainian ancestor was and when he or she left the
Ukraine and arrived in Canada? Are you curious about your family’s Ukrainian
heritage?
If so, the Library and Archives Canada is a great place to begin your research.
For
instance, you will find a page specific to genealogical research at http://www.collectionscanada.gc.ca/genealogy/022-905.010-e.html
It provides
you with historical background information, archival and published material
from the collection, as well as links to other websites and records".