I'm looking for a copy of book.cls, version "1996/10/31 v1.3u".
My goal is to port the changes made to a local copy of book.cls "1996/10/31 v1.3u" used in a legacy project to the newest version.
The question Historical, stable version archive of packages pointed me to https://ctanmirror.speedata.de/ but the oldest book.cls there is "2007/10/19 v1.4h", which is what I have in MacTeX 2016 (but it says "2014/09/29 v1.4h").
book.clsfrom 2007 in your MacTeX 2016? – Jan 04 '17 at 16:52