Where can I buy Chieftan trees?

[SeekingChieftain]

I have looked high and low on the 'Net for a nursery that sells Chieftan apple trees. The only information out there is about orchards that sell harvested fruit. There is a mature Chieftan orchard at Iowa State University but I don't believe they sell trees.

If you know of a source, I would greatly appreciate hearing about it.

Thanks.