Improved groundnut sources in Canada

does any one know of a place that sales improved groundnut (apios americana) in Canada? or will ship the tubers to Canada
also a source of improved Jerusalem artichoke (helianthus tuberosus)

You'd have to check with them for more details, but Norton Naturals has ground nuts and sunchokes.

Also look through Seeds of Diversity's seed company listing if you don't know about that already.  There are more sources for sunchokes there.