"Chronology of Modern Literature and Cultural History in Fukuoka Area; 2nd year of Taisho or 1913"『福岡都市圏近代文学文化年表 (大正2年)』 (in Japanese). Kyushu University. 1913. Retrieved 19 January 2016.
med.kyushu-u.ac.jp
Takashi Nagatsuka as a patient of Inokichi Kubo was hospitalised to pass away on campus.長塚節 逝去の地 (in Japanese). Kyushu University. Retrieved 8 December 2015.
"Chronology of Works of Kubo Inokichi and Yorie - Hometown History"久保猪之吉、より江年表 - ふるさと歴史シリーズ「博多に強くなろう」(西日本シティ銀行) (in Japanese). Nishinihon Shiti Ginko. Retrieved 19 January 2016.