also, his posts on the Apple Developer Forums are also much more professional and insightful than the crap which Apple calls their documentation.
If you like, archive 1 level deep too, where it makes sense.
While much was gained in the NeXT merger, the biggest thing that was lost was developer support and documentation. They were gutted in March 1997 and were never restored. Avie Tevanian had no respect for documentation and his attitude infected the rest of the organization. One dude did so much irreparable damage.
I do know how they are today though and it’s sad.