In "Kiyushoran" (an encyclopedic book on cultures) written by Nobuyo KITAMURA (his go (byname) was guessed to be Intei) in the Edo period, there is a description that 'The word Koshitakiguchi in the preface must be wrong.'
江戸時代の喜多村信節（筠庭？）著『嬉遊笑覧』には、「前文の腰滝口とあるは、非なるべし」とある。