Written by Kazuo Ojo. Born in Hirosaki City in 1928. Familiar with Bosama Shamisen from childhood, influenced by his mother. Graduated from To-O Gijuku in 1946. In the same year, his encounter with the folk singer Tayo Dezaki, who moved into the neighborhood, became the cradle of his research on Bosama Shamisen, and he began collecting materials. The book has creases from being opened for photography, but it is in good condition.