Toshitsugu Takahashi

• Kantō-shō Enkitsu-ken Tondenʼei tanden chōsa hōkoku
• Nisshi Jihen ka ni okeru Chūgoku kōgyō jōsei
• Tsūka-shō Shōshō-ken Shōjuchin, Gōkō-ken Wankō tanden chōsa hōkoku
• Yōsukō ryūiki jōbu koseidai no shuyō tansō ni tsukite