Taught by our Daughter Shoko (Shoko ni oshierarete).By KAKO Mieko. Soshi-sha, 1988.
Sounds of the Peoples: Memorial Writing for KOIZUMI Fumio (Sho-minzoku no oto: KOIZUMI Fumio tsuito ronbun-shu).Ongaku no tomo-sha, 1986.
Recollecting Prof. KOIZUMI Fumio (Kaiso no KOIZUMI Fumio sensei).KOIZUMI Fumio wo shinobu kai, 1994.
Listening to the World: The Life of KOIZUM Fumio (Sekai wo kiita otoko: KOIZUMI Fumio to minzoku ongaku).By OKADA Maki. Heibon-sha, 1995.
Fumio Koizumi: A series of biograhpies of musicians, a book to read first.By HINO Madoka. YAMAHA Music Entertainment Holdings, Inc., 2022.