If you want the real deal, you can buy them directly from the source in France. Shipping is expensive.A cheaper way is to join Seed Savers Exchange and get some from another member. I see them in this year's yearbook. In any case, they are wonderful.
Lou

Here is a link that might be useful: Haricot Tarbais Label Rouge

In our climate they are interesting to grow. The plants spread out about three feet each way from the trellis as though they would prefer to grow on the next trellis over. This cuts down on the aisle space.

I got mine from Purcell Mountain Farms and I do offer them in the SSE Yearbood. You could pm me. - Dick

Here is a link that might be useful: Purcell Mountain Farms