First edition published in Showa 26 (1951), a self-study book on tea ceremony from Showa 31 (1956), authored by Soho Suzuki, published by Shufunotomo Co., Ltd., Urasenke edition. It has been kept in the tea room for a long time, and although the paper is discolored, it is still readable. It is an old book, but if anyone is interested.