Systematists know the tome by Gareth Nelson and Norman Platnick, Systematics and Biogeography (1981), as the Blue Book (shades of Wittgenstein!). It was published once and is now so hard to get that I have been unable to find a copy in ten years of looking. Now, Malte Ebach tells me, the series at UCP of which my book is part, is making a legal PDF available here.
I’m taking it to the local print shop for a physical copy. It’s not searchable (but give me a copy of Acrobat and I’ll make it so), but at least it’s there. The core historical narrative of it started me off on what became my book. If anyone can send me a scan of the cover and spine, I’ll upload it on my box.net page.