I have a signed copy of this book. Zinsser had a profound influence on my writing, back when I first started doing technology pieces for the Wilson Library Bulletin. I used to read his book annually. In the move from Greeley to Douglas County I misplaced it. It's probably in the basement somewhere. But I got a hankering to see it again, and found the expanded 25th anniversary edition in our library (copyright 2001).
It's still good. Zinsser sees writing as a craft, and his advice is clear, direct, and humane. I can see, looking back all those years now, just how much I owe to it. And how far I have yet to go.