Interestingly... although this post is in the wrong category... it looks like everything up to System 7.5.5 is still being freely offered by Apple on their servers (although the links are now obscured) - as are all the OS 8 and 9 updates (but not OS 8 or 9 itself).  Meaning any links to Macintosh Garden's hosting of those files shouldn't violate policy - since there are 0 legal implications to something Apple is giving out for free.