I uploaded the rest of the files that were archived on AyashiiWorld@
Osamu Warehouse here:
https://2ch.cx/src/1955.zip

Not everything was archived, and that which was archived is mostly 
random images, audio files, html files, etc. circa 1997-1998

WARNING: MAY CONTAIN EXEs AND SCRIPTS MADE BY GESU AND OTHER L33T 
         HAX0RZ. DO NOT RUN THEM ヽ(´Д`;)ノ

Source:
https://web.archive.org/web/19991008022607/http://members.xoom.com/osamu_souko/souko/