Kojiruien is a kind of encyclopedia compiled and edited in the Meiji period of Japan, providing many references published by the Meiji period that started in 1868, to each and every term in it.
古事類苑（こじるいえん）は明治時代に編纂された類書（一種の百科事典）で、各項目について明治時代前の諸文献を引用するもの。