枚方市
There is no detailed information about what Shonozaki did in his later years. In 1978 he was interviewed by Yoji Akashi at Hirakata, Osaka. Up to 1983, he wrote some articles about the modern history of Singapore which were published in Japanese magazines such as "Shi (History)" by "Gendai-shi Konwakai(social meeting on modern history)" and he took part in the Japan Safety Appliances Association. He died in 1991.