The collections and facilities of the former Imperial Library were preserved untouched in Ueno, and it became the NDL Ueno Branch Library, one of the branches of the NDL.
旧帝国図書館の蔵書と施設はそのまま上野に残され、同館は国立国会図書館の支部図書館である国立国会図書館支部上野図書館とされた。