Hemp for Soft Furnishings

I am a designer of soft furnishings and have been using antique hemp sheets to make my products from. I need a supplier of hemp fabric which closely resembles the antique hemp that I use. I mainly use  French antique hemp sheets to make curtains and accessories but I am finding less time to go out searching for good quality antique sheets around the antique markets in France where I live.  I would like to find a manufacturer of hemp fabric that mirrors as closely as possible to the colour and texture of antique hemp, preferably hand-made on old looms. Many thanks, Lynette Clarke, Confolens, France.