This report on an IRIX OS release from 1993 shows that the more things change, the more things stay the same.
It's full of great advice such as:
Aim for simplicity in design, not complexity. Make a few things work really well; don't have 1000 flaky programs. Be willing to cut features; who's going to be more pissed off: a customer who was promised a feature that doesn't appear, or the same customer who gets the promised feature, and after months of struggling with it, discovers he can't make it work?
And a few brilliant burns:
Marketing - Engineering Disconnect: "Marketing -- where the rubber meets the sky."