dtd for HTML

I have tried to find on your website the dtd for HTML4.0 (or .1)
but I only find your excellent exposition of it.
I would like to download the real DTD, the pure sgml code that defines
it.

Thanks in advance
John Palmer

4 Horyford Close, Preston, Weymouth DT3 6DJ, England
+44 1305 832240(office) 835410(domestic)
johnp@bcs.org.uk
http://www.stx69.demon.co.uk/