Among those early works are copies made of the Fusuma kinpeki-shohekiga (paintings on gold foil-pressed paper sliding doors and screens) of the Nishinomaru Palace and the Honmaru Palace of Edo-jo Castle and the like, including works that are no longer extant, or of which the whereabouts are unknown, making them extremely valuable sources to researchers.
そうした模写の中には、江戸城西の丸御殿や本丸御殿の襖金碧障壁画など、現存しない物や原本所在不明な物も含まれており、研究者にとっては貴重な資料である。