Chart (PDF file) showing all artists in the collection. Okawa Museum of Art. (in Japanese) Accessed March 7, 2009. (Ei-Q appears slightly to the right of and above the centre.)
miyazaki-archive.jp
Ei-Q's work was prominent in the museum's display of its permanent collection during the year 2008–2009: description, Miyazaki Prefectural Art Museum (in Japanese). Retrieved March 6, 2009.