Older releases didn't publish the HTML (you'd have to run latex2html yourself). Note that the most complete collection of Python downloadables is at http://www.python.org/ftp/python/src/ -- the 1.2 and 1.3 source releases are there and they contain the .tex files.

Actually, the 1.2 and 1.3 HTML at least have been preserved: ftp://www.python.org/pub/python/doc/1.2/ ftp://www.python.org/pub/python/doc/1.3/ --Guido van Rossum (home page: http://www.python.org/~guido/)