I thought Wendell Sander did the IWM?
http://www.folklore.org/StoryView.py?story=Five_Different_Ma...
(and lots of other pages.)
http://www.folklore.org/StoryView.py?story=Five_Different_Ma...
(and lots of other pages.)
However, Ron Nicholson (rhn) is on the Mac case signatures, he also did major work on Apple //, so I find it strange that he is not mentioned anywhere on folklore.org . I think this is something worth researching..