His major works were two volumes of tanka poems plus his diaries: Ishikawa wrote some of his diaries in a Latin script transliteration of Japanese so that his wife could not read them.

[1] A fictionalised Ishikawa appears in the anime Woodpecker Detective's Office.

Ishikawa is summoned as a Pseudo-Servant in the body of Makidera Kaede in the Fate/Grand Order X Himuro's World crossover episode.

Ishikawa also appears in Golden Kamuy, as an ally of Hijikata Toshizō.

Donald Keene, The First Modern Japanese: The Life of Ishikawa Takuboku.