[TUHS] Harvard's PPL, Polymorphic Programming Language

[Jonathan Gray via TUHS]

On Sun, May 31, 2026 at 05:52:49AM +0000, Lars Brinkhoff via TUHS wrote:
> Hello,
> 
> I recently discovered a copy of the PPL "Polymorphic Programming Langauge".
> https://github.com/PDP-10/harvard-ppl
> 
> Even though it seems to have enjoyed over a decade as an educational
> tool, it seems to have dissapeared almost without a trace.  The
> Wikipedia page is very sparse.
> 
> On topic for TUHS, PPL was ported to Unix and used at "several
> universities".  Has anyone seen this programming language in the
> archives?

tuhs Applications/Usenix_77/ug091377.tar.gz
h/ppl/ has 66 files, so I won't list them all

'PPL Version 7(30)'
h/ppl/read_me

'news for version v.6(13) of ppl'
h/help/ppl