You can access this text only by inserting a User ID and Password obtained from the National Institute of Japanese Literature. To obtain these do the following;
(1) contact the Institute at http://base3.nijl.ac.jp/Rcgi-bin/hon_home.cgi.
(2) click “User Toroku”, and
(3) register by filling in the form. If registration is approved, you will receive your User ID and Password within a week or two.