After Keichu died, IMAI collected his favorite works and donated them to the Mite Bunko library in Kyoto Kamigamo-jinja Shrine, preserving them for future generations and preventing them from being scattered and lost.
契沖の死後、その手沢本（しゅたくぼん）などを集めて京都上賀茂神社の三手文庫（みてぶんこ）に納めたため、後世に伝えられて散逸するのを免れた。