Katsumi KUROITA revised the already published Rikkokushi of Kokushi Taikei and newly added "Ruiju Kokushi" to make a series of five volumes consisting of four volumes of "Kokushi Taikei Rikkokushi" and one volume of "Kokushi Taikei Ruiju Kokushi."
黒板勝美が既刊の国史大系の六国史を再校訂し、新たに『類聚国史』を加え、『国史大系六国史』4冊、『国史大系類聚国史』1冊の計5冊にした。