>This is an old question, but I have never seen a clear answer.. I want a
>3-button mouse for use under MacOS, A/UX and NetBSD/Mac68k.  Anyone have a
>list of working mice? 

I don't think anyone is maintaining a list of working mice.  However, my
Logitech TrackMan works fine both with MacOS and NetBSD/mac68k, but you
should be careful as there's at least one version of Logitech MouseMan that
doesn't work well with NetBSD.  My TrackMan says its M/N is T-AE2 and its
P/N is 804071-00.

Hope this helps,

ken