Marj, sorry I can't help with this, although I grow a few that are used as dry beans I don't grow enough to be of any use, so I haven't tried any of them. Heritage Harvest Seed has an extensive list of beans grown for dried, maybe there's one there that will peak your interest. I've read 'Soissons Vert' and 'Brita's Foot Long' are good pole choices. Salt Spring Seeds have Brita's listed, I have 'Soissons Vert' but only managed a few seeds from one plant this year, will grow it again next year hopefully with better results.

Annette