Software Preservation Group history

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Paolo Amoroso

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Oct 25, 2025, 2:50:08 AMOct 25
to Medley Interlisp core
On his personal blog Paul McJones traced the history of the Software Preservation Group and its projects, including the Lisp project with a lot of material on Interlisp: The Software Preservation Group.

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Paul McJones

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Oct 25, 2025, 12:49:30 PMOct 25
to Paolo Amoroso, Medley Interlisp core
Paolo,

You’re very observant: I just posted that yesterday afternoon. The Lisp project began in 2005. Here’s the oldest snapshot of the page I can find in the Wayback Machine:


It lists INTERLISP and mentions Interlisp-VAX but not Interlisp-D. I’d already talked to quite a few people (including many of the original Lisp 1.5 team) in my search for various Lisp implementations:

Paul W. Abrahams, Jeff Barnett, Alan Bawden, Fred Blair, Robert Brayton, Daniel G. Bobrow, Phil Budne, L. Peter Deutsch, Deborah Douglas, Daniel J. Edwards, Edward Feigenbaum, Robert R. Fenichel, Richard Greenblatt, Jack Harper, Timothy P. Hart, Zane H. Healy, Al Kossow, Alan Kotok, Klim Maling, John McCarthy, David A. Moon, Joel Moses, Daniel L. Murphy, Marvin L. Minsky, Eric Norman, Kent M. Pitman, Stephen R. Russell, Robert A. Saunders, Olin Sibert, Herbert Stoyan, Bob Supnik.


Paul

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