Thanks to Rob Bos for
this link.
“mozilla.org is deeply saddened to report the passing of John
McMullen, Netscape employee and valued member of the Mozilla
community.”
“Regrettably, we learned earlier today that John McMullen had
passed away. John was an engineer in CPD, and helped lead our
Macintosh development on Communicator 4.0, 4.5, and 5.0. Before any
of that, he earned a PhD in pure mathematics; lectured at
universities on three continents; learned French, German, Italian,
and Russian; and was an avid musician and composer.”