Source for 'J.C. Weigelan'?

Hi all,

This forum doesn't seem to get much traffic, but asters and the old-fashioned "Korean" garden chrysanthemums are among my favorite flowers.

I have been searching for a type of mum with single-petalled dark pink flowers called 'J.C. Weigelan'. Does anyone know of a source to purchase it, or know of any truly hardy mum varieties to substitute for it? I would also be open to trading cuttings next spring.

Thanks in advance for any help,
Corey