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.