The preface of this book was written by a person named Mukuju YABUNO, which was actually the pen name of Genji SHIBUKAWA, a city news editr at Tokyo Asahi shinbun-Newspaper where Takuboku was working at that time.
序文を書いている藪野椋十とは、当時の啄木の勤務先である東京朝日新聞で社会部長を務めていた渋川玄耳のことである。