“Washi”, Japanese paper, is possibly to be on the list of intangible cultural heritage at Paris UNESCO Meeting on November 24. Hosokawa Washi, one of three Washi listed is produced in Ogawa Town, Saitama Prefecture. Hosokawa Washi there has been made in volume since 17th century for supplying to big market in Edo or old Tokyo with more than one million populations, where paper demand is so high. Because of its strength with high water-resistance, Hosokawa Washi was used for Edo merchants’ accounting books, which they put into their wells and protect from fires occurred frequently in Edo during that time. Visitor to Ogawa town can enjoy trying papermaking at Ogawa town’s paper mill.