This morning, I was reading a news article on Apple (either Snow Leopard or FCC), and I came across a part that referred to an old book by Apple (IIRC), that had two parts, and the first part was just on UI design. I was trying to get a copy of that book, but it seems I lost the link to the article. Does this book ring a bell with anyone, and if so, what's the title? (This book was published before 2000, maybe even before 1990, so if anyone recalls this book, congrats!, you have a great memory).
I'm going to take a punt at either of these books.
Apple Computer Inc. (1985). Chapter Two: The Macintosh User-Interface Guidelines. In Inside Macintosh: Volume I
Apple Computer Inc. (1991). Chapter Two: User Interface Guidelines. In Inside Macintosh: Volume IV